SUPPLEMENTARY MATERIAL 1. Marine

SUPPLEMENTARY MATERIAL 1. Marine biodiversity inventory of (I) Macroalgae (excluding most crustose coralline algae), (II) Marine Plants, (III) Invertebrates, and (IV) Fishes from 5 intertidal and subtidal locations (BC = Blue Cavern, BFC = Big Fisherman’s Cove, HR = Habitat Reef, IP = Intake Pipes, and PC = Pumpernickel Cove) in Blue Cavern Onshore State Marine Conservation Area off Santa Catalina Island, California. Scientific names preceded by an equals sign in parentheses indicate the species name when the species was first reported. Values in parentheses specify the number of species recorded for each taxonomic group. Taxa are organized alphabetically by phylum and class (columns organized top to bottom, left to right). Table footnotes (see page 25) are indicated by superscripted letters.

Taxa Location Reference I. MACROALGAE (n=174 total) Chlorophyta: Ulvophyceae (n=20) Bryopsis corticulans Setchel BFC 76 Chaetomorpha aerea (Dillwyn) Kützing BFC 33, 70, 76, 78, 102 Chaetomorpha spiralis Okamura BC, BFC 70 Cladophora spp. BFC 63, 76 Cladophora graminea F.S.Collins BFC, IP 70 Cladophora microcladioides Collins BC, IP 70 Cladophoropsis fasciculata (Kjellman) Wille BFC 76 Codium dawsonii P.C.Silva, F.F.Pedroche, M.E.Chacana & K.A.Miller BC, BFC, IP, PC 70, 78 Codium fragile subsp. californicum (J.Agardh) Maggs & J.Kelly BFC 33, 63, 70, 76, 78, 101, 102, 122 Codium hubbsii E.Y.Dawson BC, BFC, IP, PC 70, 76, 78 Codium johnstonei P.C.Silva BFC 102 Codium setchellii N.L.Gardner BFC 33, 45, 63, 76, 78, 102, 122 Derbesia marina (Lyngbye) Solier BFC, IP, PC 45, 70 Kornmannia spp. BFC 63 Monostroma spp. BFC 63 Ulva spp. BFC 63, 76, 91 Ulva californica Wille BFC 59, 70, 76 Ulva intestinalis Linnaeus IP 70 Ulva lobata (Kützing) Harvey BFC 59 Urospora penicilliformis (Roth) Areschoug BFC 101 Ochrophyta: Phaeophyceae (n=49) Acinetospora nicholsoniae Hollenberg BFC 8, 16, 33, 70, 101 Coilodesme corrugata Setchell & N.L.Gardner BFC 70 Coilodesme rigida Setchell & N.L.Gardner IP 70 Colpomenia spp. BFC 63 cColpomenia peregrina Sauvageau BFC 65, 76 Colpomenia sinuosa (Mertens ex Roth) Derbès & Solier BC, BFC, IP, PC 33, 58, 70, 76, 78, 91 Desmarestia viridis (O.F.Müller) J.V.Lamouroux (= D. pacifica) BFC 16, 70 Dictyopteris undulata Holmes (= D. zonarioides) BC, BFC, IP 7, 8, 16, 27, 33, 45, 63, 70, 76, 78, 101-103, 122 Dictyota binghamiae J.Agardh BC, BFC, HR, IP 8, 70 Dictyota coriacea (Holmes) I.K.Wang, H.-S.Kim & W.J.Lee BC, BFC, HR, IP, PC 16, 27, 33, 63, 70, 76, 78, 122 (= Pachydictyon coriaceum) Dictyota flabellata (F.S.Collins) Setchell & N.L.Gardner BC, BFC, HR, IP 8, 27, 33, 70, 76, 78, 122 Ecklonia arborea (Areschoug) M.D.Rothman, Mattio & J.J.Bolton BC, BFC, IP, PC 5, 27, 33, 45, 49, 58, 63, 70, 76, 78, 84, 87, 91, 94, (= Eisenia arborea) 101, 102, 106, 122 Ectocarpus corticulatus De A.Saunders BFC 78

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Ochrophyta: Phaeophyceae (Cont.) Egregia menziesii (Turner) Areschoug (= E. laevigata) BC, BFC, IP, PC 32, 58, 63, 70, 76, 78, 87, 102, 106, 122 Feldmannia globifera (Kützing) G.Hamel BFC 78 Hapterophycus canaliculatus Setchell & N.L.Gardner BFC 76 Hincksia granulosa (Smith) P.C.Silva BFC 70 Hydroclathrus clathratus (C.Agardh) M.A.Howe BFC, IP 8, 70, 76 Kuckuckia catalinae Hollenberg BFC 43, 70 Laminaria farlowii Setchell BC, BFC, IP, PC 27, 70, 84, 87, 102, 106 Leathesia spp. BFC 63 Macrocystis pyrifera (Linnaeus) C.Agardh BC, BFC, HR, IP, PC 5, 8, 16, 27, 32, 33, 39, 70, 76, 78, 84, 87, 94, 101, 102, 106, 122 cMutimo cylindricus (Okamura) H.Kawai & T.Kitayama BFC 70 Neoagarum fimbriatum (Harvey) H.Kawai & T.Hanyuda BC, BFC, PC 27, 70, 78, 84, 87 (= Agarum fimbriatum) Pelagophycus porra (Léman) Setchell BC, BFC, HR 8, 27, 70, 71, 101 Pelvetiopsis californica (P.C.Silva) Neiva, Raimondi, G.A.Pearson & Serrão BFC 45, 57, 58, 63, 70, 76, 78, 91, 101, 122 (= Hesperophycus californicus) Petalonia spp. BFC 63 Petalonia binghamiae (J.Agardh) K.L.Vinogradova BFC 70, 76 (= Endarachne binghamiae) Petalonia fascia (O.F.Müller) Kuntze BFC 76 Petrospongium rugosum (Okamura) Setchell & N.L.Gardner BFC 58, 63, 70, 76 (= Cylindrocarpus rugosus) Phaeostrophion spp. BFC 63 Pseudolithoderma nigrum Hollenberg (= P. nigra) BFC 59, 63, 76 Ralfsia spp. BFC 63, 91 Sargassum agardhianum Farlow BFC, IP 58, 63, 70, 76, 78 cSargassum horneri (Turner) C.Agardh (= S. filicinum) BC, BFC, HR, IP, PC 63, 70, 72, 73, 84, 87, 106, 122 cSargassum muticum (Yendo) Fensholt BC, BFC, IP 5, 8, 16, 27, 33, 63, 70, 76, 78, 94, 101, 102, 122 Sargassum palmeri Grunow BC, BFC 33, 70, 87, 122 Scytosiphon spp. BFC 63 Scytosiphon dotyi M.J.Wynne BFC 59, 76 Scytosiphon lomentaria (Lyngbye) Link BC, BFC, HR 33, 70, 76, 78 Silvetia compressa (J.Agardh) E.Serrão, T.O.Cho, S.M.Boo & Brawley BFC 7, 33, 45, 58, 63, 70, 76, 78, 91, 101, 102, 122 (= Pelvetia fastigiata) Sphacelaria spp. BFC 63

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Ochrophyta: Phaeophyceae (Cont.) Sphacelaria rigidula Kützing (= Sphacelaria furcigera) BFC 76 Sporochnus pedunculatus (Hudson) C.Agardh BC, BFC, HR 70 Stephanocystis dioica (N.L.Gardner) Draisma, Ballesteros, F.Rousseau & BFC 27, 49, 57, 58, 63, 70, 76, 78, 91, 94, 122 T.Thibaut (= Halidrys dioica) Stephanocystis neglecta (Setchell & N.L.Gardner) Draisma, Ballesteros, BC, BFC, IP 16, 27, 70, 76, 78 F.Rousseau & T.Thibaut (= Cystoseira neglecta) Stephanocystis osmundacea (Turner) Trevisan (= Cystoseira osmundacea) BC, BFC, IP 70, 87, 102, 122 Taonia lennebackerae Farlow ex J.Agardh IP 70 Zonaria farlowii Setchell & N.L.Gardner BC, BFC, HR, IP, PC 27, 33, 63, 70, 76, 78, 87, 101-103, 122 Rhodophyta: Bangiophyceae (n=1) Porphyrella californica G.J.Hollenberg BFC 76 Rhodophyta: Compsopogonophyceae (n=1) Erythrotrichia welwitschii (Ruprecht) Batters BFC 78 Rhodophyta: Florideophyceae (n=103) Acrosorium ciliolatum (Harvey) Kylin BFC, HR, IP 70, 78 Amphiroa beauvoisii J.V.Lamouroux (= A. zonata) BFC 76 Anisocladella pacifica Kylin BFC 70, 76 Asparagopsis taxiformis (Delile) Trevisan de Saint-Léon BC, BFC, HR, IP, PC 70, 102, 122 Bonnemaisonia hamifera Hariot BFC 70 Bossiella spp. BFC 63 Bossiella dichotoma (Manza) P.C.Silva BFC 58, 76, 78 Bossiella orbigniana (Decaisne) P.C.Silva BFC 70 Botryocladia pseudodichotoma (Farlow) Kylin BC, IP 70 Calliarthron cheilosporioides Manza IP 70 Calliarthron tuberculosum (Postels & Ruprecht) E.Y.Dawson BFC 53, 70, 76, 78 Callithamnion rupicola C.L.Anderson BFC 76 Callophyllis spp. BFC 77 Carpopeltis bushiae (Farlow) Kylin BC, BFC, IP 63, 70, 78 cCaulacanthus okamurae Yamada BFC 63 Caulacanthus ustulatus (Mertens ex Turner) Kützing BFC 63 Centroceras spp. BFC 63 Centroceras clavulatum (C.Agardh) Montagne BFC 76 Ceramium spp. BFC 63, 76 Ceramium codicola J.Agardh BFC 76 Ceramium sinicola Setchell & Gardner BFC 70, 76

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Rhodophyta: Florideophyceae (Cont.) Chondracanthus canaliculatus (Harvey) Guiry (= Gigartina canaliculata) BC, BFC 57, 58, 63, 70, 76, 91, 92 Chondracanthus spinosus (Kützing) Guiry (= Gigartina spinosa) BFC 58, 63, 70, 76, 78 Chondria acrorhizophora Setchell & N.L.Gardner (= C. californica) BC, BFC 8, 33, 70, 76, 78, 122 Choreonema thuretii (Bornet) F.Schmitz BFC 12 Colaconema daviesii (Dillwyn) Stegenga (= Audouinella daviesii) BFC 76 Corallina spp. BFC 63 Corallina officinalis var. chilensis (Decaisne) Kützing (= C. chilensis) BFC, IP 33, 58, 70, 76, 78, 91, 92, 101 Corallina vancouveriensis Yendo BFC, IP 58, 70, 76, 78, 102 Corallophila spp. BFC 63 Corallophila eatoniana (Farlow) T.O.Cho, H.-G.Choi, G.I.Hansen BFC 58, 76 & S.M Boo (= Ceramium eatonianum) Cryptopleura spp. BFC 59, 63, 70 Cryptopleura crispa Kylin IP 70, 78 Cryptopleura peltata (Montagne) M.J.Wynne (= C. corallinarum) BFC 76 Cryptopleura ramosa (Hudson) L.Newton (= Acrosorium uncinatum) BFC 8, 27, 76 Endocladia muricata (Endlicher) J.Agardh BFC 91 Erythrocystis saccata (J.Agardh) P.C.Silva BFC 70, 76 Gastroclonium parvum (Hollenberg) C.F.Chang & B.M.Xia BFC 63 Gelidium spp. BFC 27 Gelidium coulteri Harvey BFC 58, 63, 70, 76, 92 Gelidium nudifrons N.L.Gardner BC, BFC, HR 70, 78 Gelidium purpurascens N.L.Gardner BC, BFC, IP 57, 58, 63, 70, 76, 78 Gelidium pusillum (Stackhouse) Le Jolis BFC 58 Gelidium robustum (N.L.Gardner) Hollenberg & I.A.Abbott BFC 63, 76, 78 Gloiocladia laciniata (J.Agardh) Sánchez & Rodríguez-Prieto BFC 102 (= Fauchea laciniata) Gloiopeltis furcata (Postels & Ruprecht) J.Agardh BFC 63, 76 Gracilaria armata (C.Agardh) Greville (= Gigartina armata) BFC 78 Gracilaria pacifica I.A.Abbott BFC 76 Gracilariopsis longissima (S.G.Gmelin) Steentoft, L.M.Irvine & Farnham BFC 78 (= Gracilaria verrucosa) Herposiphonia littoralis Hollenberg BFC 76 Herposiphonia plumula var. parva (Hollenberg) Hollenberg BFC 58, 70, 76, 78 Hildenbrandia spp. BFC 58, 63 Hymenena spp. BFC 63

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Rhodophyta: Florideophyceae (Cont.) Hypnea johnstonii Setchell & Gardner BFC 76, 78 Hypnea valentiae (Turner) Montagne BFC 63, 76 Jania adhaerens J.V.Lamouroux BFC 70 Jania rosea (Lamarck) Decaisne (= Haliptylon gracile) BFC, IP, PC 45, 63, 70, 76, 78 Jania tenella (Kützing) Grunow BFC 63, 70, 76, 78 Laurencia pacifica Kylin BFC, IP 58, 63, 70, 76, 78, 83, 91, 92 Laurencia snyderae E.Y.Dawson BFC, IP 70, 76, 78 Laurencia subopposita (J.Agardh) Setchell BFC 76, 78 Liagora californica Zeh BC, BFC 70 Lithophyllum dispar (Foslie) Foslie (= Tenarea dispar) BFC 78 Lithophyllum imitans Foslie BFC 32 Lithophyllum proboscideum (Foslie) Foslie BFC 58 Lithothamnion sp. BFC 101 aLithothamnion australe Foslie BFC 110 Lithothrix aspergillum J.E.Gray BFC, IP 27, 33, 63, 70, 76, 78, 101 Mazzaella affinis (Harvey) Fredericq (= Rhodoglossum affine) BC, BFC 59, 63, 70, 76, 78, 91, 102 Mazzaella leptorhynchos (J.Agardh) Leister BFC 63 Melanosiphon spp. BFC 63 Melanothamnus savatieri (Hariot) Díaz-Tapia & Maggs BFC 70 (= Polysiphonia savatieri) Microcladia coulteri Harvey BFC 110 Nemalion elminthoides (Velley) Batters BFC 63, 76 Neogastroclonium subarticulatum (Turner) L.Le Gall, Dalen BFC 63, 76, 110 & G.W.Saunders (= Gastroclonium subarticulatum) Nienburgia andersoniana (J.Agardh) Kylin IP 70 Osmundea sinicola (Setchell & N.L.Gardner) K.W.Nam BFC 63, 70, 76, 78 (= Laurencia sinicola) Osmundea spectabilis (Postels & Ruprecht) K.W.Nam BFC 63, 76 (= Laurencia spectabilis) Osmundea spectabilis var. diegoensis (E.Y.Dawson) K.W.Nam BFC 102 Osmundea splendens (Hollenberg) K.W.Nam (= Laurencia splendens) BFC 76 cPachymeniopsis lanceolata (K.Okamura) Y.Yamada ex S.Kawabata BFC 74 (= Grateloupa lanceolata) Peyssonnelia spp. BFC 63 Pikea californica Harvey BFC 70

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Rhodophyta: Florideophyceae (Cont.) Pleonosporium spp. BFC 78 Plocamium pacificum Kylin (= P. cartilagineum) BC, BFC, IP 27, 33, 45, 70, 76, 78, 102, 122 Plocamium violaceum Farlow BFC 70, 76 Polysiphonia spp. BFC 58, 63, 70, 76 Polysiphonia acuminata N.L.Gardner BFC 76 Polysiphonia mollis J.D.Hooker & Harvey BFC 78 Polysiphonia pacifica var. delicatula Hollenberg BFC 78 Polysiphonia scopulorum var. villum (J.Agardh) Hollenberg BFC 70, 76, 78 Pterochondria woodii (Harvey) Hollenberg BFC 70 Pterocladiella capillacea (S.G.Gmelin) Santelices & Hommersand BFC, IP 27, 33, 49, 58, 63, 70, 76, 78, 91, 101 Prionitis linearis Kylin BC, BFC 70 Rhodymenia californica Kylin BC, BFC, IP 32, 63, 69, 70, 76, 78, 91, 101 Rhodymenia pacifica Kylin BFC 78 Sarcodiotheca gaudichaudii (Montagne) P.W.Gabrielson BFC 63 Scinaia johnstoniae Setchell IP 70 Spyridia filamentosa (Wulfen) Harvey BFC 70 Symphyocladiella baileyi (Harvey) D.Bustamante, B.Y.Won, S.C.Lindstrom BFC, IP 70 & T.O.Cho (= Pterosiphonia baileyi) Symphyocladiella dendroidea (Montagne) D.Bustamante, B.Y.Won, BFC 58, 63, 70, 76, 78 S.C.Lindstrom & T.O.Cho (= Pterosiphonia dendroidea) Tiffaniella snyderae (Farlow) I.A.Abbott BFC 58, 63, 76 Vertebrata hendryi (N.L.Gardner) A.M.Savoie & G.W.Saunders BFC 76 (= Polysiphonia hendryi) Xiphosiphonia pennata (C.Agardh) Savoie & G.W.Saunders BFC 63, 76 (= Pterosiphonia pennata) II. PLANTS (n=2 total) Tracheophyta: Magnoliopsida (n=2) Phyllospadix torreyi S.Watson BFC 58, 76, 122 Zostera marina Linnaeus BFC 24, 76, 107, 122 III. INVERTEBRATES (n=503 total) Annelida: Polychaeta (n=37) Amaeana occidentalis (Hartman, 1944) BFC 101 Brachysyllis lagunae (Hartman, 1961) (= Dioplosyllis broadi) BFC 10 Capitella capitata (Fabricius, 1780) BFC 45 Ceratonereis paucidentata (Moore, 1903) BFC 101

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Annelida: Polychaeta (Cont.) Chaetopterus dewysee Tilic & Rouse, 2020 BFC 109 Chaetopterus variopedatus (Renier, 1804) BFC 7, 16, 39 Diopatra ornata Moore, 1911 BC, BFC 16, 33, 86 Dodecaceria fewkesi Berkeley & Berkeley, 1954 BC 95 Euclymene sp. BFC 101 Exogone lourei Berkeley & Berkeley, 1938 BFC 101 Exogone molesta (Banse, 1972) BFC 101 Flabelliderma papillosa (Essenberg, 1922) (= F. essenbergae) BFC 100 Flabesymbios commensalis (Moore, 1909) (= Flabelliderma commensalis) BFC 100 cHydroides elegans (Haswell, 1883) BFC 105 Hydroides gracilis (Bush, 1905) BFC 98 Malmgreniella baschi Pettibone, 1993 BFC 7, 78 Myxicola infundibulum (Montagu, 1808) BFC 7, 102, 122 Nereis latescens Chamberlin, 1919 BFC 16 Opisthosyllis leslieharrisae Aguado, San Martín & Nygren, 2005 BFC 1 Paraonides sp. BFC 101 Phragmatopoma californica (Fewkes, 1889) BFC, IP 33, 59, 78, 98, 102 Phyllochaetopterus sp. BFC 7 Phylo felix Kinberg, 1866 BFC 101 Praxillella affinis pacifica Berkeley, 1929 BFC 101 Prionospio cirrifera Wirén, 1883 (= Minuspio cirrifera) BFC 101 Proceraea gigantea Nygren & Gidholm, 2001 BFC 82 Protolaeospira eximia (Bush, 1905) (= Spirorbis eximus) BFC 51 Salmacina tribranchiata (Moore, 1923) BFC, IP 78, 98, 102 Scolelepis sp. BFC 101 Scoletoma zonata (Johnson, 1901) (= Lumbrineris zonata) BFC 16, 101 Serpula vermicularis Linnaeus, 1767 BFC 62, 102 Spiochaetopterus costarum (Claparède, 1869) BFC 7, 16, 101 Spirobranchus spinosus Moore, 1923 BFC, IP 16, 32, 45, 78, 98, 101, 102, 122 Spirorbis spp. BFC 63, 98, 105 Tharyx sp. BFC 101 Thelepus crispus Johnson, 1901 BC, BFC 86, 102 Trophoniella americana (Monro, 1928) (= Piromis americana) BFC 45 Arthropoda: Branchiopoda (n=1) Evadne sp. BFC 39

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Arthropoda: Hexanauplia (n=29) Acartia tonsa Dana, 1849 BFC 39 Anthessius nortoni Illg, 1960 BFC, IP 44, 78 Balanus sp. IP 101 Balanus glandula Darwin, 1854 BFC, IP 59, 63, 78, 98 Calanus pacificus Brodsky, 1948 BFC 39 Candacia spp. BFC 39 Chthamalus dalli Pilsbry, 1916 BFC 45, 58, 63 Chthamalus fissus Darwin, 1854 BFC 58, 63, 78, 91, 98 Clausocalanus sp. BFC 39 Corycaeus sp. BFC 39 Ctenocalanus sp. BFC 39 Euchaeta sp. BFC 39 Eupelte spp. BFC 39 Labidocera sp. BFC 39 Lucicutia sp. BFC 39 Megabalanus californicus (Pilsbry, 1916) (= Balanus californicus) BFC, IP 5, 58, 78, 98, 105 Megabalanus tintinnabulum (Linnaeus, 1758) (= Balanus tintinnabulum) BFC 78 Microsetella sp. BFC 39 Oithona sp. BFC 39 Oncaea sp. BFC 39 Paracalanus sp. BFC 39 Pollicipes polymerus Sowerby, 1833 BFC 78, 98 Porcellidium sp. BFC 39 Porcellidium viride (Philippi, 1840) (= P. sarsi) HR 19 Rhincalanus nasutus Giesbrecht, 1888 BFC 39 Scutellidium lamellipes Monk, 1941 HR 17 Tetraclita rubescens Nilsson-Cantell, 1931 (= T. squamosa rubescens) BFC 33, 58, 63, 91, 92, 98, 101 Tigriopus californicus (Baker, 1912) BFC 48 Tisbe sp. HR 15-17 Arthropoda: Malacostraca (n=114) dAciconula acanthosoma Chess, 1989 BFC 15, 16 Alpheus dentipes Guérin, 1832 (= Crangdon dentipes) BFC 45 dAmathimysis trigibba Murano & Chess, 1987 BFC 16, 75 Americhelidium rectipalmum (Mills, 1962) (= Synchelidium rectipalmum) BFC 39, 104 Ampelisca cristata Holmes, 1908 BFC 101

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Arthropoda: Malacostraca (Cont.) Amphilochus sp. HR 17 Ampithoe spp. BFC 16, 39 Aoroides spinosus Conlan & Bousfield, 1982 (= A. columbiae) HR 17, 19, 39, 104 Aruga holmesi J.L.Barnard, 1955 (= Lysianassa holmesi) BFC 39, 104 Batea transversa Shoemaker, 1926 BFC, HR 16, 17, 19, 39 Betaeus spp. BFC 5 Cancer spp. BC, IP, PC 94 Caprella californica Stimpson, 1856 BFC 16 Caprella pilidigitata Laubitz, 1970 BFC 16, 39 Cerapus tubularis Say, 1817 BFC 16 Chevalia inaequalis (Stout, 1913) BFC 16 Cirolana spp. BFC 7, 63 Cirolana diminuta Menzies, 1962 BFC 39 Cirolana harfordi (Lockington, 1877) BFC 39 Cumella spp. BFC 16, 39 Cyathura munda Menzies, 1951 BFC 16 Cyclaspis nubila Zimmer, 1936 BFC 16, 39 Deilocerus planus (Rathbun, 1900) (= Clythrocerus planus) BFC 117 Dynoides elegans (Boone, 1923) BFC 115 Elasmopus antennatus (Stout, 1913) BFC 16, 39 Enallopaguropsis guatemoci (Glassell, 1937) BC, BFC 119 Epialtoides hiltoni (Rathbun, 1923) IP 31 cEricthonius brasiliensis (Dana, 1853) BFC, HR 16, 17, 39, 104 Erythrops sp. BFC 39 Eurydice caudata Richardson, 1899 BFC 39 Eusiroides monoculoides (Haswell, 1879) BFC 16 Excorallana sp. BFC 39 Excorallana truncata (Richardson, 1899) (= E. kathae) BFC 39 Exosphaeroma rhomburum (Richardson, 1899) BFC 16, 39 Gibberosus falciformis (J.L.Barnard, 1969) BFC 104 (= Megaluropus Iongimerus falciformis) Gnathia spp. BFC 16 Gnathopleustes pugettensis (Dana, 1853) (= Parapleustes pugettensis) BFC 16 Haigiopagurus diegensis (Scanland & Hopkins, 1969) BFC 37 (= Pylopagurus diegensis)

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Arthropoda: Malacostraca (Cont.) Hemisquilla californiensis Stephenson, 1967 BFC 7 Hemisquilla ensigera (Owen, 1832) BFC 5 dHeptacarpus fuscimaculatus Wicksten, 1986 BFC 16, 118, 119 Heptacarpus herdmani (Walker, 1898) BFC 39 Heptacarpus palpator (Owen, 1839) BFC 118 Hippolyte clarki Chace, 1951 BFC, HR 16, 17, 39 Holmesimysis sculpta (W.Tattersall, 1933) (= Acanthomysis sculpta) HR 17, 19, 39 Hourstonius vilordes (J.L.Barnard, 1962) (= Gitanopsis vilordes) BFC, HR 16, 17, 19, 39 Hyale niger (Haswell, 1879) (= H. nigra) BFC 39 Ianiropsis sp. BFC 16 Ianiropsis kincaidi Richardson, 1904 BFC 45 Janiridae sp. BFC 101 Joeropsis dubia Menzies, 1951 BFC 16 Leptochelia dubia Dojiri & Sieg, 1997 (not Krøyer, 1842) BFC 16, 39 Ligia occidentalis (Dana, 1853) IP 78 Limnoria sp. BFC 39 Lophopanopeus leucomanus (Lockington, 1877) BFC, IP 7, 78, 98 Loxorhynchus spp. BFC 5 Loxorhynchus grandis Stimpson, 1857 IP 89 Lysmata californica (Stimpson, 1866) BC, BFC 118 Maera spp. BFC 16 Mayerella banksia Laubitz, 1970 BFC 16 Megalorchestia californiana Brandt, 1851 (= Orchestoidea californiana) BFC 36 Melita sp. BFC 19 Metaphoxus frequens J.L.Barnard, 1960 BFC 104 Microjassa litotes J.L.Barnard, 1954 HR 17, 19 Monoculodes sp. BFC 104 Munna spp. BFC 16 bNebalia pugettensis (Clark, 1932) BFC 39 Orchomene sp. BFC 39 Oregonia gracilis Dana, 1851 BFC 7 Pachygrapsus crassipes Randall, 1840 BFC, IP 58, 63, 78, 91, 98, 113 dPaguristes parvus Holmes, 1900 BFC 37, 119 Paguristes ulreyi Schmitt, 1921 HR 11 Pagurus sp. BFC 7, 59, 102

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Arthropoda: Malacostraca (Cont.) Pagurus hirsutiusculus (Dana, 1851) BFC 63, 98 Pagurus samuelis (Stimpson, 1857) BFC 7, 63, 78, 98 Pandalus danae Stimpson, 1857 BFC 7 Panulirus interruptus (Randall, 1840) BC, BFC, HR, IP, PC 5, 27, 33, 86, 89, 91, 92, 94, 102, 113 Paracerceis sp. BFC 39 Paracerceis cordata (Richardson, 1899) BFC 16, 19 Pariphinotus sp. (= Heteroplias sp.) BFC 19, 39 Pariphinotus escabrosus (J.L.Barnard, 1962) BFC 16 Pariphinotus seclusus (Shoemaker, 1933) (= Heteroplias seclusus) BFC 39 Paraxanthias taylori (Stimpson, 1861) BFC 5, 7, 94, 98 Pentidotea resecata (Stimpson, 1857) (= Idotea resecata) BFC 16, 19 Perotripus brevis (LaFollette, 1915) BFC 16 Phimochirus californiensis (Benedict, 1892) BFC 7 Photis spp. BFC 16 Photis brevipes Shoemaker, 1942 (= P. californica) BFC 39, 104 Pinnixa sp. BFC 7 Pleusirus secorrus J.L.Barnard, 1969 HR 17 Pleuroncodes planipes Stimpson, 1860 BFC, IP 122 Podocerus cristatus Thomson, 1879 BFC 16, 39 Pontogeneia rostrata Gurjanova, 1938 HR 17, 19 Portunus xantusii (Stimpson, 1860) BFC 7 Protohyale frequens (Stout, 1913) (= Hyale frequens) BFC, HR 16, 17 Pugettia spp. BFC 7 Pugettia dalli Rathbun, 1894 IP 120 Pugettia gracilis Dana, 1851 BFC 63 Pugettia producta (Randall, 1840) BFC, IP 58, 86, 98 Pugettia richii Dana, 1851 BFC 63, 78, 98 Rocinela belliceps (Stimpson, 1864) BFC 16 Romaleon antennarium (Stimpson, 1856) (= Cancer antennarium) BFC 98 Romaleon jordani (Rathbun, 1900) (= Cancer jordani) BFC 16 Rudilemboides stenopropodus J.L.Barnard in J.L.Barnard & Reish, 1959 BFC 104 Siriella pacifica Holmes, 1900 BFC, HR 16, 17, 19, 39 dStenorhynchus debilis (Smith, 1871) BC 23 Sunamphitoe femorata (Krøyer, 1845) (= Peramphithoe femorata) BFC 36 Sunamphitoe plea (J.L.Barnard, 1965) (= Ampithoe plea) HR 17, 19

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Arthropoda: Ostracoda (Cont.) Synchelidium sp. BFC 39 Taliepus nuttallii (Randall, 1840) BFC, IP 5, 7, 31 Tecticeps convexus Richardson, 1899 BFC 45 Thorlaksonius platypus (Barnard & Given, 1960) (= Pleustes platypa) BFC, HR 16, 17, 19 Thysanoessa spinifera Holmes, 1900 BFC 39 Zeuxo normani (Richardson, 1905) (= Anatanais normani) BFC 16 Arthropoda: Ostracoda (n=14) Asteropella slatteryi Kornicker, 1981 BFC 16 Conchoecia sp. BFC 39 Cycloleberis lobiancoi (Mueller, 1894) BFC 39 Cythereis sp. BFC 39 Euphilomedes carcharodonta (Smith, 1952) BFC 39 Leuroleberis sharpei Kornicker, 1981 BFC 16 Macrocyprina barbara Maddocks, 1990 BFC 16 Macrocyprina pacifica (Leroy, 1943) Swain, 1967 HR 17 Neonesidea phlegeri (Mckenzie & Swain, 1967) BFC 16 Parasterope sp. BFC 39 Philomedes sp. BFC 39 Rutiderma spp. BFC 16 Vargula americana Brunner von Wattenwyl, 1891 BFC 39, 78 Vargula tsujii Kornicker & Baker, 1977 BFC 16, 46, 78 Bryozoa: Gymnolaemata (n=16) Aetea anguina (Linnaeus, 1758) BFC 16 cBugula neritina (Linnaeus, 1758) BC, BFC, IP 33, 60, 86, 120 Bugulina californica (Robertson, 1905) (= Bugula californica) BC, BFC 86, 102 Celleporaria brunnea (Hincks, 1884) BFC 108 Cradoscrupocellaria bertholletii (Audouin, 1826) BFC 52 (= Scrupocellaria bertholetti) Fenestrulina malusii (Audouin, 1826) BFC 81 Membranipora sp. BFC 102 Membranipora membranacea (Linnaeus, 1767) BFC 96 Primavelans insculpta (Hincks, 1883) (= Hippodiplosia insculpta) BFC 81 Rhynchozoon rostratum (Busk, 1855) BFC 33 Rhynchozoon tumulosum (Hincks, 1883) BFC 45 Schizomavella auriculata (Hassall, 1842) BFC 33

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Bryozoa: Gymnolaemata (Cont.) Thalamoporella californica (Levinsen, 1909) BFC 14, 16 Tricellaria spp. BFC, IP 78, 98 cWatersipora subatra (Ortmann, 1890) BFC 105 cWatersipora subtorquata (d'Orbigny, 1852) BFC 105, 108 Bryozoa: Stenolaemata (n=4) Diaperoforma californica (d'Orbigny, 1853) BC, BFC 7, 32, 86, 102 Patinella radiata (Audouin, 1826) BFC 105 Tubulipora spp. BFC 16, 63 Tubulipora tuba (Gabb & Horn, 1862) HR 20 Chaetognatha: Sagittoidea (n=1) dParaspadella pimukatharos (Alvariño, 1987) (= Spadella pimukatharos) BFC 4 Chordata: Appendicularia (n=1) Oikopleura sp. BFC 39 Chordata: Ascidiacea (n=13) Aplidium californicum (Ritter & Forsyth, 1917) BFC, IP 78, 98 cBotrylloides diegensis Ritter & Forsyth, 1917 (= B. diegense) BFC 33 Botryllus sp. BFC 33 Clavelina huntsmani Van Name, 1931 BFC 101, 102, 122 Didemnum carnulentum Ritter & Forsyth, 1917 BC, BFC 63, 78, 86, 98, 101 cDiplosoma listerianum (Milne Edwards, 1841) BFC 78, 105 Eudistoma spp. (= Archidistoma spp.) BFC 98 Eudistoma ritteri Van Name, 1945 (= Archidistoma ritteri) BFC, IP 78, 98 Euherdmania claviformis (Ritter, 1903) BFC, IP 78, 98 Metandrocarpa taylori Huntsman, 1912 BC, BFC 86 Pyura haustor (Stimpson, 1864) BFC 32 Ritterella pulchra (Ritter, 1901) BFC 78, 98 Trididemnum opacum (Ritter, 1907) BFC, IP 16, 32, 33, 52 Chordata: Thaliacea (n=3) Pegea socia (Bosc, 1802) BFC, HR 122 Pyrosoma atlanticum Péron, 1804 BC, BFC, HR, IP, PC 122 Thetys vagina Tilesius, 1802 BFC, HR, IP 122 Cnidaria: Anthozoa (n=14) Anthopleura elegantissima (Brandt, 1835) BFC 58, 63, 98 Anthopleura sola Pearse & Francis, 2000 BFC 63

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Cnidaria: Anthozoa (Cont.) Astrangia haimei Verrill, 1886 (= A. lajollaensis) BFC 32, 45, 98 Balanophyllia elegans Verrill, 1864 BFC 102 cBunodeopsis sp. BFC 23 Corynactis californica Carlgren, 1936 BC, BFC 32, 63, 86, 98, 102 Discophyton rudyi (Verseveldt & van Ofwegen, 1992) (= Alcyonium rudyi) BC, BFC 86, 102 Epiactis prolifera Verrill, 1869 BC, BFC 22, 98 Epizoanthus leptoderma Cutress & Pequenat, 1960 BFC 32, 45 Leptogorgia chilensis (Verrill, 1868) (= Lophogorgia chilensis) BFC, IP 102 Muricea californica Aurivillius, 1931 BC, BFC, HR, IP, PC 86, 89, 102, 122 Muricea fruticosa Verrill, 1869 BC, BFC, HR, IP, PC 86, 89, 102, 122 Pachycerianthus fimbriatus McMurrich, 1910 BC, BFC 32, 86, 102 Paracyathus stearnsii Verrill, 1869 BFC 32 Cnidaria: Hydrozoa (n=10) Abietinaria spp. BFC 98 Cladocoryne floccosa Rotch, 1871 BFC 56 Eudendrium sp. BFC 35 Halecium spp. BFC 98 Macrorhynchia sp. BFC 7 Plumularia sp. BFC 7, 32, 102 Schuchertinia milleri (Torrey, 1902) (= Hydractinia milleri) BFC 102 Sertularella spp. BFC 63, 98 Sertularia spp. BFC 63 Tubularia spp. BFC 63 Echinodermata: Asteroidea (n=7) Astrometis sertulifera (Xantus, 1860) BC, BFC, HR, IP 63, 78, 86, 94, 98, 113, 122 Henricia spp. IP 63, 86 Henricia leviuscula (Stimpson, 1857) BFC 27, 98, 122 Linckia columbiae Gray, 1840 BC, BFC, HR 7, 11, 27, 32, 33, 66, 86, 98, 102 Patiria miniata (Brandt, 1835) (= Asterina miniata) BFC 11, 27, 98, 101 Pisaster brevispinus (Stimpson, 1857) PC 86, 113 Pisaster giganteus (Stimpson, 1857) BC, BFC, HR, IP, PC 5, 21, 27, 91, 94, 101, 102, 113 Echinodermata: Echinoidea (n=6) Centrostephanus coronatus (Verrill, 1867) BC, BFC, HR, IP 11, 27, 32, 50, 86, 94, 101, 102, 106, 122 Dendraster terminalis (Grant & Hertlein, 1938) (= D. laevis) BFC 7 Lovenia cordiformis A.Agassiz, 1872 BFC 7

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Echinodermata: Echinoidea (Cont.) Lytechinus pictus (Verrill, 1867) (= L. anamesus) BFC, HR 11, 101, 122 Mesocentrotus franciscanus (A.Agassiz, 1863) BC, BFC, IP 32, 86, 94, 98, 102, 106, 122 (= Strongylocentrotus franciscanus) Strongylocentrotus purpuratus (Stimpson, 1857) BC, BFC, HR, IP 11, 27, 58, 63, 86, 94, 98, 102, 106, 122 Echinodermata: Holothuroidea (n=3) Apostichopus californicus (Stimpson, 1857) (= Parastichopus californicus) BFC, IP 89, 122 Apostichopus parvimensis (H.L.Clark, 1913) (= Parastichopus parvimensis) BC, BFC, HR, IP 11, 16, 33, 86, 101, 102, 122 Leptosynapta albicans (Selenka, 1867) BFC 7 Echinodermata: Ophiuroidea (n=11) Amphipholis sp. IP 112 Amphipholis squamata (Delle Chiaje, 1828) BFC 7, 16, 45 Amphiodia sp. BFC 112 Ophiactis sp. IP 112 Ophioderma panamensis Lütken, 1859 BFC, IP 112 Ophioncus sp. IP 112 Ophionereis annulata (Le Conte, 1851) IP 112 Ophioplocus esmarki Lyman, 1874 IP 112 Ophiopsila californica A.H.Clark, 1921 BFC 102 Ophiopteris papillosa (Lyman, 1875) BFC, IP 87, 112 Ophiothrix spiculata Le Conte, 1851 IP 112 Mollusca: Bivalvia (n=32) Americardia biangulata (Broderip & G.B.Sowerby I, 1829) BFC 7, 16 Brachidontes adamsianus (Dunker, 1857) BFC 58, 63, 92, 98, 102 Chaceia ovoidea (Gould, 1851) BC, BFC 86, 102 Chama arcana F.R.Bernard, 1976 BFC, IP 5, 78, 98 Chama pellucida Broderip, 1835 BFC 45, 94 Clinocardium nuttallii (Conrad, 1837) BFC 7 Crassadoma gigantea (J.E.Gray, 1825) (= Hinnites giganteus) BC, BFC, IP 86, 89, 94, 102, 122 Crenella decussata (Montagu, 1808) BFC 16 Cryptomya californica (Conrad, 1837) BFC 98 Glans carpenteri (Lamy, 1922) (= G. subquadrata) BFC, IP 78, 98 Globivenus fordii (Yates, 1890) BFC 5 Hiatella arctica (Linnaeus, 1767) BFC, HR 16, 18 Leiosolenus plumula (Hanley, 1843) (= Lithophaga plumula) BFC 45 Limaria hemphilli (Hertlein & A.M.Strong, 1946) BFC 5

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Mollusca: Bivalvia (Cont.) Liralucina approximata (Dall, 1901) (= Phacoides approximatus) BFC 101 Modiolus capax (Conrad, 1837) BFC 98 Mytilisepta bifurcata (Conrad, 1837) (= Septifer bifurcatus) BFC 63, 91, 98 Mytilus californianus Conrad, 1837 BFC 58, 63, 91, 92, 94, 98, 122 Mytilus edulis Linnaeus, 1758 BFC 45, 91, 92, 98 Neolepton salmoneum (Carpenter, 1864) (= Halodakra brunnea) HR 18 Neolepton subtrigonum (Carpenter, 1857) (= Halodakra subtrigonum) BFC 16 Periploma sp. BFC 101 Philobrya setosa (Carpenter, 1864) BFC, HR 16, 18, 98 Pododesmus macrochisma (Deshayes, 1839) (= P. cepio) BFC 5, 94 Pseudochama exogyra (Conrad, 1837) BFC 58, 91, 92, 94 dPteria sterna (Gould, 1851) BC 1, 16 Scrobicularia sp. BFC 114 Semele rupicola Dall, 1915 BFC, IP 78, 98 Solemya valvulus P.P.Carpenter, 1864 BFC 16 Solen rosaceus Carpenter, 1864 BFC 16, 101 Mollusca: Cephalopoda (n=5) Tagelus californianus (Conrad, 1837) BFC 39, 114 Tellina sp. BFC 16, 101 Doryteuthis opalescens (Berry, 1911) (= Loligo opalescens) BFC 7, 16, 122 Octopus bimaculatus Verrill, 1883 BFC, HR, IP, PC 5, 16, 27, 33, 41, 45, 94, 122 Octopus bimaculoides Pickford & McConnaughey, 1949 BFC 91 Octopus micropyrsus Berry, 1953 BFC 39 Octopus rubescens Berry, 1953 BFC 7 Mollusca: Gastropoda (n=128) Acanthina sp. HR 11, 16 Acteocina harpa (Dall, 1871) BFC 16 Alia carinata (Hinds, 1844) (= Mitrella carinata, Nitidella carinata) BFC, HR, IP 16, 18, 75, 98 Amphissa sp. HR 18 Amphissa versicolor Dall, 1871 BFC 98 Amphithalamus inclusus Carpenter, 1864 (= A. tenuis) BFC, HR 16, 18, 98 Apata pricei (MacFarland, 1966) (= Coryphella pricei, Flabellina pricei) HR 18 Aplysia californica J.G.Cooper, 1863 BFC, HR, IP 58, 63, 82, 84, 85, 98, 102, 122 Aplysia vaccaria Winkler, 1955 IP 85 Atrimitra idae (Melvill, 1893) (= Mitra idae) HR, IP 11, 78, 98

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Mollusca: Gastropoda (Cont.) Barleeia spp. BFC 98 Barleeia californica Bartsch, 1920 BFC, HR 16, 18 Bittium sp. BFC 39 Bulla gouldiana Pilsbry, 1895 BFC 7 Caecum californicum Dall, 1885 BFC, HR 16, 18 Caecum dalli Bartsch, 1920 BFC 16 Caecum occidentale (Bartsch, 1920) (= Fartulum occidentale) HR 18 Californiconus californicus (Reeve, 1844) (= Conus californicus) BFC, HR 7, 18, 32, 63, 98, 102, 122 Calliostoma canaliculatum (Sasao & Habe, 1973) BFC 45 Carinaria japonica Okutani, 1955 BFC, IP 122 Ceratostoma nuttalli (Conrad, 1837) BFC, HR 11, 63, 91, 92, 94, 98 Cerithiopsis sp. HR 18 Chrysallida navisa (Dall & Bartsch, 1907) (= Odostomia navisa) HR 18 Corambe pacifica MacFarland & O'Donoghue, 1929 HR 18 Crepidula sp. HR 18 Crepidula perforans Valenciennes, 1846 BFC, IP 78, 98 Crepipatella lingulata (Gould, 1846) BFC, IP 16, 33, 78, 98 Cystiscus politus (Carpenter, 1857) BFC 98 Dendronotus frondosus (Ascanius, 1774) HR 18 Dendropoma spp. BFC 63 Dendropoma lituella (Mörch, 1861) (= Spiroglyphus lituella) BFC 58, 78 Dendropoma rastrum (Mörch, 1861) BFC 58, 98 Diodora aspera (Rathke, 1833) IP 52, 58, 91 Epitonium tinctum (Carpenter, 1864) BFC 63, 98 Eubranchus rustyus (Er. Marcus, 1961) HR 18 Eulithidium pulloides (Carpenter, 1865) (= Tricolia pulloides) BFC, IP 16, 18, 39, 78, 98 dFelimare californiensis (Bergh, 1879) BFC 34, 122 dFelimida galexorum (Bertsch, 1978) (= Chromodoris galexorum) BC, BFC 23 Fissurella volcano Reeve, 1849 BFC 63, 91, 94, 98 dFlabellina bertschi Gosliner & Kuzirian, 1990 BFC 35 Flabellinopsis iodinea (J.G.Cooper, 1863) (= Flabbelina iodinea) BFC, HR, PC 18, 102, 122 Granulina margaritula (Carpenter, 1857) HR 18, 19 Haliotis sp. BC, BFC, IP, PC 86, 94, 98 eHaliotis corrugata W.Wood, 1828 BC, BFC, IP 86, 89, 102, 106, 122

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Mollusca: Gastropoda (Cont.) fHaliotis cracherodii Leach, 1814 BC, BFC 33, 98 eHaliotis fulgens Philippi, 1845 BC, BFC, IP 86, 89, 102, 106, 122 Haminoea virescens (G.B.Sowerby II, 1833) BFC 98 Hermissenda crassicornis (Eschscholtz, 1831) BC, BFC, HR 18, 63, 86, 98, 122 Hespererato columbella (Menke, 1847) (= Erato columbella) BFC 98 Hesperaptyxis luteopictus (Dall, 1877) (= Fusinus luteopictus) BFC, IP 78, 98 Hipponix panamensis C.B.Adams, 1852 (= H. cranoides) BFC 98 Hipponix tumens Carpenter, 1864 (= H. subrufus tumens) BFC, IP 58, 78, 98 Homalopoma baculum (Carpenter, 1864) BFC 98 Homalopoma luridum (Dall, 1885) BFC 98 Iselica ovoidea (Gould, 1853) IP 78, 98 Kelletia kelletii (Forbes, 1852) BC, BFC, HR, IP 11, 16, 27, 86, 89, 94, 102, 122 Lacuna spp. BFC 63 Lacuna unifasciata Carpenter, 1856 BFC, HR 16, 18 Leptopecten sp. HR 18 Limacia cockerelli (MacFarland, 1905) BFC 39, 111 Limacia mcdonaldi Uribe, Sepúlveda, Goddard & Valdés, 2017 BFC 111 Lirobittium attenuatum (Carpenter, 1864) (= Bittium attenuatum) BFC 98 Lirularia spp. BFC 16 Littorina spp. BFC 63 Littorina keenae Rosewater, 1978 BFC 63, 98 Littorina plena Gould, 1849 BFC 63 Littorina scutulata Gould, 1849 BFC 63, 98 Lottia asmi (Middendorff, 1847) BFC 98 Lottia austrodigitalis (Murphy, 1978) BFC 58, 63 Lottia conus (Test, 1945) (= Acmaea conus) BFC 63, 98 Lottia digitalis (Rathke, 1833) (= Acmaea digitalis) BFC 45, 63, 98 Lottia gigantea Gray in G.B.Sowerby I, 1834 BFC 63, 98 Lottia instabilis (Gould, 1846) (= L. ochracea) BFC 63 Lottia limatula (Carpenter, 1864) (= Acmaea limatula, Collisella limatula) BFC 63, 91, 98, 113 Lottia paradigitalis (Fritchman, 1960) BFC 58, 63 Lottia pelta (Rathke, 1833) (= Acmaea pelta) BFC 63, 98 Lottia scabra (Gould, 1846) (= Collisella scabra, Macclintockia scabra) BFC 63, 91, 98, 113 Lottia strigatella (Carpenter, 1864) (= Acmaea strigatella) BFC 63, 98 Maxwellia spp. BC, PC 94

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Mollusca: Gastropoda (Cont.) Maxwellia gemma (G.B.Sowerby II, 1879) BFC, HR, IP 7, 11, 63, 78, 91, 92, 98, 122 Maxwellia santarosana (Dall, 1905) BC, HR 11, 116 Megastraea undosa (W.Wood, 1828) (= Astrea undosa, Lithopoma undosum) BC, BFC, HR, IP 5, 7, 16, 33, 78, 86, 89, 94, 98, 102, 122 Megathura crenulata (Sowerby I, 1825) BFC, HR, IP 27, 89, 102, 122 Melanella thersites (Carpenter, 1864) (= Balcis thersites) HR 18 Melibe leonina (Gould, 1852) HR 18 Mitrella aurantiaca (Dall, 1871) BFC, IP 78, 98 Mitrella tuberosa (Carpenter, 1865) HR 18 Mitromorpha carpenteri Gilbert, 1954 (= M. filosa) IP 78 Navanax inermis (J.G.Cooper, 1862) (= Chelidonura inermis) BFC, HR 7, 18, 33, 63, 122 Neobernaya spadicea (Swainson, 1823) (= Cypraea spadicea) BFC, PC 5, 7, 94, 102, 122 Neostylidium eschrichtii (Middendorff, 1849) (= Bittium eschrichtii) BFC, HR 18, 63 Norrisia norrisii (G.B.Sowerby I, 1838) BC, BFC, HR, IP, PC 5, 18, 27, 32, 78, 86, 94, 98, 102, 122 Nucella emarginata (Deshayes, 1839) BFC 63, 98 Nucella ostrina (Gould, 1852) BFC 58, 63 Ocenebra spp. BFC 63 Ocenebra edwardsii (Payraudeau, 1826) IP 78 Odostomia aequisculpta Carpenter, 1864 (= Merelina aequisculpta) HR 18 Odostomia virginalis Dall & Bartsch, 1909 HR 18 Okenia rosacea (MacFarland, 1905) (= Hopkinsia rosacea) BFC 98 Olivella biplicata (Sowerby I, 1825) BFC 101 Opalia funiculata (Carpenter, 1857) BFC 63 Paciocinebrina atropurpurea (Carpenter, 1865) (= Ocenebra atropurpurea) BFC 98 Paciocinebrina circumtexta (Stearns, 1871) (= Ocenebra circumtexta) BFC 63, 98 Paciocinebrina foveolata (Hinds, 1844) (= Ocenebra foveolata) HR 11 Paciocinebrina interfossa (Carpenter, 1864) (= Ocinebrina interfossa) BFC, IP 78, 98 Parviturbo acuticostatus (Carpenter, 1864) BFC 16 Peltodoris mullineri Millen & Bertsch, 2000 BFC 68 Petaloconchus spp. BFC 63 Petaloconchus montereyensis Dall, 1919 BFC, IP 63, 78, 94, 98 dPolycera alabe Collier & Farmer, 1964 IP 60 Polycera tricolor Robilliard, 1971 HR 18 Pseudopusula californiana (Gray, 1827) (= Trivia californiana) BFC 5, 63 Pteropurpura festiva (Hinds, 1844) HR 11 Pteropurpura trialata (G.B.Sowerby II, 1834) (= Pterynotus trialatus) BFC 32, 94

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Mollusca: Gastropoda (Cont.) Rissoina sp. HR 18 Seila montereyensis Bartsch, 1907 BFC, IP 78, 98 Tectarius striatus (P.P.King, 1832) (= Littorina planaxis) BFC 19, 58, 93 Tegula aureotincta (Forbes, 1852) BFC, HR, IP, PC 11, 16, 18, 27, 33, 58, 94, 98 Tegula brunnea (Philippi, 1849) BFC 33, 98, 122 Tegula eiseni Jordan, 1936 BC, BFC, HR, IP, PC 5, 7, 11, 33, 63, 94, 98 Tegula funebralis (A.Adams, 1855) BFC 98, 122 Thylacodes squamigerus (Carpenter, 1857) (= Serpulorbis squamiger) BC, BFC, IP 5, 32, 33, 45, 63, 78, 86, 91, 94, 98, 102, 113, 122 Tricolia retrolineata Nangammbi & Herbert, 2008 BFC, HR 18 Triphora pedroana (Bartsch, 1907) BFC 98 Trivia spp. BC, BFC, PC 94 Tylodina fungina Gabb, 1865 BFC, IP 78, 98 Volvarina taeniolata Mörch, 1860 BFC 29 Zanassarina penicillata (Carpenter, 1864) (= Nassarina penicillata) BFC 16, 98 Mollusca: Polyplacophora (n=12) Cyanoplax dentiens (Gould, 1846) (= Lepidochitona dentiens) BFC, IP 78, 98, 122 Cyanoplax spp. BFC 63 Cyanoplax hartwegii (Carpenter, 1855) BFC 63, 98 Cyanoplax keepiana (Berry, 1948) (= Lepidochitona keepiana) BFC, IP 78, 98 Lepidozona cooperi (Carpenter [in Dall], 1879) BFC 98 Lepidozona pectinulata (Carpenter in Pilsbry, 1893) (= L. californiensis) BFC, IP 78, 94, 98 Mopalia acuta (Carpenter, 1855) BFC 98 Mopalia muscosa (Gould, 1846) BFC 91, 98 Nuttallina spp. BFC 58, 63, 98 Nuttallina californica (Reeve, 1847) (= N. fluxa) BFC 59, 91, 98 Stenoplax conspicua (Dall, 1879) BC, PC 94 Stenoplax heathiana Berry, 1946 BFC 98 Phoronida (n=1) Phoronopsis californica Hilton, 1930 BFC 7, 32, 33, 101 Porifera: Calcarea (n=7) Clathrina blanca (Miklucho-Maclay, 1868) BFC 47, 99 Clathrina clathrus (Schmidt, 1864) BFC 99 Clathrina coriacea (Montagu, 1814) BFC 47 Leucandra heathi Urban, 1906 BFC, IP 78, 98 Leucandra losangelensis (Laubenfels, 1930) (= Leucetta losangelensis) BFC 8, 33, 102, 121

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Porifera: Calcarea (Cont.) Leucilla nuttingi (Urban, 1902) BFC 99 Leucosolenia nautilia Laubenfels, 1930 BFC 33, 99 Porifera: Demospongiae (n=32) Acanthancora cyanocrypta (Laubenfels, 1930) BFC, PC 33, 45, 86, 99, 102, 121 (= Hymenamphiaster cyanocrypta) Acarnus erithacus de Laubenfels, 1927 BFC 99 Antho karykina (de Laubenfels, 1927) (= P. karykina) BFC, IP 58, 78, 98, 99 Aplysina fistularis (Pallas, 1766) BFC 99 Aplysilla glacialis (Merejkowsky, 1878) BFC 45 Aplysilla polyraphis Laubenfels, 1930 BFC 98 Callyspongia californica Dickinson, 1945 BFC 99 Clathria asodes (de Laubenfels, 1930) (= Leptoclathria asodes) BFC 99 Clathria parthena (de Laubenfels, 1930) BFC 58, 99, 121 Clathria pennata (Lambe, 1895) (= Ophlitaspongia pennata) BFC, IP 45, 78, 98, 102 Cliona viridis (Schmidt, 1862) BFC 99 Cyamon koltuni Sim & Bakus, 1986 BFC, IP 29, 78, 99 Cyamon neon de Laubenfels, 1930 BC 99 Dragmacidon mexicanum (de Laubenfels, 1935) (= Axinella mexicana) BFC 8, 99, 121 Dysidea amblia (de Laubenfels, 1930) BFC 121 Dysidea fragilis (Montagu, 1814) BFC 99 Geodia gibberosa Lamarck, 1815 BFC 99 Geodia hentscheli Cárdenas, Rapp, Schander & Tendal, 2010 BFC, IP 78, 98 (= G. mesotriaena) Halichondria panicea (Pallas, 1766) BFC 99 Haliclona spp. IP 45, 78, 98 Haliclona ambrosia (Dickinson, 1945) (= Adocia ambrosia) BFC 99 Haliclona cinerea (Grant, 1826) (= H. permollis BFC 98, 121 Hymedesmia arndti (de Laubenfels, 1930) (= Astylinifer arndti) BFC 45 Hymedesmia levis Lundbeck, 1910 BFC 99 cHymeniacidon sinapium de Laubenfels, 1930 BFC, IP 45, 78, 98 Pachastrella dilifera Laubenfels, 1934 BFC 98 Penares cortius de Laubenfels, 1930 BFC 121 Smenospongia aurea (Hyatt, 1875) (= Verongia aurea) BFC 121 Stelletta clarella de Laubenfels, 1930 BFC 98 Stelletta estrella de Laubenfels, 1930 IP 78

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Porifera: Demospongiae (Cont.) Tethya aurantium (Pallas, 1766) (= Tethea lyncurium) BFC 58, 121 Tethya californiana de Laubenfels, 1932 BFC, IP 86, 122 Sipuncula: Sipunculidea (n=1) Golfingia sp. BFC 101 Sipuncula: Phascolosomatidea (n=1) Apionsoma murinae murinae (Cutler, 1969) (= Golfingia hespera) BFC 45 IV. FISHES (n=86 total) Chordata: Actinopterygii (n=75) Alloclinus holderi (Lauderbach, 1907) BC, BFC, HR, PC 3, 11, 16, 33, 87, 122 Anisotremus davidsonii (Steindachner, 1876) BC, BFC, IP 39, 87, 89, 102, 122 Atherinops affinis (Ayres, 1860) BC, BFC 79, 87, 89, 97, 102, 122 Atractoscion nobilis (Ayres, 1860) BFC, HR 122 cAzurina hirundo Jordan & McGregor, 1898 BFC 54 dBalistes polylepis Steindachner, 1876 BFC 122 Brachyistius frenatus Gill, 1862 BC, BFC, IP, PC 3, 6, 16, 33, 39, 40, 87, 97, 102 Caulolatilus princeps (Jenyns, 1840) BC, BFC, IP, PC 9, 87, 102, 122 cChaenopsis alepidota (Gilbert, 1890) BFC 8, 122 Cheilopogon pinnatibarbatus pinnatibarbatus (Bennett, 1831) BFC 8, 122 Chilara taylori (Girard, 1858) BFC 8, 16 Chromis punctipinnis (Cooper, 1863) BC, BFC, IP, PC 3, 8, 32, 33, 39, 40, 45, 88, 89, 101, 102, 122 Citharichthys sordidus (Girard, 1854) BC 61 Clinocottus analis (Girard, 1858) BFC 13, 79, 113 Cosmocampus arctus arctus (Jenkins & Evermann, 1889) BFC 3, 16 Cymatogaster aggregata Gibbons, 1854 BC, BFC, IP 8, 16, 33, 39, 87, 97 Embiotoca jacksoni Agassiz, 1853 BC, BFC, IP, PC 3, 8, 16, 33, 40, 87, 89, 91, 102, 113, 122 Embiotoca lateralis Agassiz, 1854 BFC 8 Engraulis mordax Girard, 1854 BC, BFC, HR, IP, PC 8, 16 Gibbonsia elegans (Cooper, 1864) BC, BFC 3, 13, 16, 45, 79, 87, 89, 91, 113 Gibbonsia montereyensis Hubbs, 1927 BFC 122 Girella nigricans (Ayres, 1860) BC, BFC, IP, PC 3, 8, 16, 33, 45, 79, 88, 91, 101, 102, 113, 122 Gobiesox rhessodon Smith, 1881 BFC 2 Gymnothorax mordax (Ayres, 1859) BC, BFC, HR, PC 23, 32, 33, 45, 79, 87, 101, 122 Halichoeres semicinctus (Ayres, 1859) BC, BFC, HR, IP, PC 3, 8, 16, 32, 33, 40, 87, 89, 91, 97, 101, 102 Hermosilla azurea Jenkins & Evermann, 1889 BC, BFC 33, 87, 97 Heterostichus rostratus Girard, 1854 BC, BFC, IP, PC 33, 87, 102, 122

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Chordata: Actinopterygii (Cont.) Hippoglossus stenolepis Schmidt, 1904 BFC 122 Hyperprosopon argenteum Gibbons, 1854 BFC 8, 16, 39, 102 Hypsoblennius jenkinsi (Jordan & Evermann, 1896) BFC 3 Hypsurus caryi (Agassiz, 1853) BC, BFC 8, 87, 102 Hypsypops rubicundus (Girard, 1854) (= H. rubicunda) BC, BFC, HR, IP, PC 3, 8, 16, 32, 33, 45, 87-89, 91, 101, 102 dLabrisomus xanti Gill, 1860 BFC 62 Leiocottus hirundo Girard, 1856 BFC 8, 16 Leuresthes tenuis (Ayres, 1860) BFC 25 Lythrypnus dalli (Gilbert, 1890) BC, BFC, HR, IP, PC 3, 11, 16, 33, 45, 87, 101, 102, 122 Lythrypnus zebra (Gilbert, 1890) BFC 3, 16, 102, 122 Medialuna californiensis (Steindachner, 1876) BC, BFC, IP, PC 3, 8, 16, 33, 87, 101, 102, 122 Ophiodon elongatus Girard, 1854 BC 16, 87 Oxyjulis californica (Günther, 1861) BC, BFC, IP, PC 3, 8, 13, 16, 32, 33, 39, 40, 87-89, 91, 101, 102, 122 Oxylebius pictus Gill, 1862 BC, BFC, IP 16, 87 Paralabrax clathratus (Girard, 1854) BC, BFC, HR, IP, PC 3, 8, 11, 16, 25, 32, 40, 45, 87-89, 101, 102, 122 Paralabrax maculatofasciatus (Steindachner, 1868) BC, IP 8, 87 Paralabrax nebulifer (Girard, 1854) BC, BFC, IP, PC 8, 25, 64, 87, 89, 122 Paraclinus integripinnis (Smith, 1880) BC, BFC 3, 13 Paralichthys californicus (Ayres, 1859) BFC 8 Phanerodon furcatus Girard, 1854 BC, BFC 8 Pleuronichthys coenosus Girard, 1854 BFC 8, 16, 122 Prognathodes falcifer (Hubbs & Rechnitzer, 1958) (= Chaetodon falcifer) BC 101 Regalecus russelii (Cuvier, 1816) BFC 26 Rhacochilus toxotes Agassiz, 1854 BC, BFC, IP, PC 33, 89, 101, 122 Rhacochilus vacca (Girard, 1855) (= Damalichthys vacca) BFC, IP, PC 8, 16, 87 Rhinogobiops nicholsii (Bean, 1882) (= Coryphopterus nicholsi) BC, BFC, HR, IP, PC 3, 8, 11, 13, 16, 32, 33, 40, 87, 101, 102, 122 Rimicola eigenmanni (Gilbert, 1890) BFC 3 Rimicola muscarum (Meek & Pierson, 1895) BFC 2 Ruscarius creaseri (Hubbs, 1926) (= Artedius creaseri) BC, BFC 3, 13, 33 Sardinops sagax (Jenyns, 1842) BC, BFC, HR, IP, PC 25 Scorpaena guttata Girard, 1854 BC, BFC 3, 8, 33, 122 Scorpaenichthys marmoratus (Ayres, 1854) BC, BFC, IP 89, 122 dScorpaenodes xyris (Jordan & Gilbert, 1882) BC, BFC 55, 122 Sebastes atrovirens (Jordan & Gilbert, 1880) BC, BFC, IP, PC 16, 39, 87, 89 Sebastes rastrelliger (Jordan & Gilbert, 1880) BC, BFC, IP 42, 89

SUPPLEMENTARY MATERIAL 1. Continued.

Taxa Location Reference Chordata: Actinopterygii (Cont.) Sebastes serranoides (Eigenmann & Eigenmann, 1890) BC, BFC, IP 16, 39, 89 Sebastes serriceps (Jordan & Gilbert, 1880) BC, BFC, HR, IP, PC 45, 87, 89, 102, 122 Semicossyphus pulcher (Ayres, 1854) (= Pimelometopon pulcher) BC, BFC, HR, IP, PC 3, 8, 11, 16, 33, 40, 87-89, 91, 101, 102, 113, 122 Seriola lalandi Valenciennes, 1833 BC 122 Seriphus politus Ayres, 1860 BFC 16, 39 Sphyraena argentea Girard, 1854 BFC, IP 8, 122 gStereolepis gigas Ayres, 1859 BC, BFC, IP 122 Syngnathus sp. BFC 6 Trachipterus altivelis Kner, 1859 BFC 79 Trachurus symmetricus (Ayres, 1855) BC, BFC, HR, IP, PC 25, 122 cTridentiger trigonocephalus (Gill, 1859) BFC 8 Umbrina roncador Jordan & Gilbert, 1882 BFC 16 Xenistius californiensis (Steindachner, 1876) BC, BFC 39 Chordata: Elasmobranchii (n=11) Carcharodon carcharias (Linnaeus, 1758) BC 122 Cephaloscyllium ventriosum (Garman, 1880) BC, BFC 80, 122 Galeorhinus galeus (Linnaeus, 1758) BC, BFC, IP, PC 30, 122 Heterodontus francisci (Girard, 1855) BC, BFC, IP 8, 80, 89, 91, 122 Myliobatis californica Gill, 1865 BC, BFC 8, 16, 67, 87, 122 Prionace glauca (Linnaeus, 1758) BFC 8 Pseudobatos productus (Ayres, 1854) (= Rhinobatos productus) BFC 8, 67, 122 Squatina californica Ayres, 1859 BC, BFC 28, 122 Tetronarce californica (Ayres, 1855) (= Torpedpo californica) BC 6 Triakis semifasciata Girard, 1855 BC, BFC, IP, PC 38, 122 Urolophus halleri Cooper, 1863 (= Urobatis halleri) BFC, PC 67, 102, 122 aIdentification based on morphology (Tompkins and Stellar 2016) bProposed taxonomic name cNon-indigenous species (n =18) dSpecies range extention (n = 14) eSpecies of Concern (n = 2; U.S. Endangered Species Act) fEndangered (n = 1; U.S. Endangered Species Act) gCritically Endangered (n = 1; International Union for Conservation of Nature)

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