) cabr / www.nps.gov (http:// single file. file. single can always reach dry land. land. dry reach always can for more information: more for park the Contact and usually found lined up in a a in up lined found usually and home for hermit crabs. crabs. hermit for home waves and make sure that you you that sure make and waves Whelk are cream in color color in cream are Whelk Kellet’s shells are also a favorite favorite a also are shells Tegula Empty Do not turn your back to the the to back your turn not Do water at low tide. The eggs of the the of eggs The tide. low at water microscopic algae and seaweeds. seaweeds. and algae microscopic Name: Name: frequently be found in shallow shallow in found be frequently • Be aware of the incoming tide. tide. incoming the of aware Be black in color. They feed on on feed They color. in black - purple intertidal zone) but can but zone) intertidal height and deep and height lives deeper than the the than deeper lives They are 1 to 1.5 in. in in in. 1.5 to 1 are They caution. caution. sublittoral (meaning that it it that (meaning sublittoral on sides of rocks. rocks. of sides on sturdy shoes and step with with step and shoes sturdy length. This species is is species This length. clusters in crevices or or crevices in clusters area extremely slippery. Wear Wear slippery. extremely area can reach up to 6 in. in in in. 6 to up reach can often form form often Tegula Intertidal Guide Intertidal Monument • Waves and algae can make the the make can algae and Waves Whelk is tan to white and and white to tan is Whelk intertidal, intertidal, - mid and Cabrillo National National Cabrillo Kellet’s the of shell The Found in the high high the in Found fingers. fingers. ) ) kelletii Kelletia ( Whelk Kellet’s ) ) funebralis Tegula ( Snail Turban Black homes, and only touch with two two with touch only and homes, live here, avoid disturbing their their disturbing avoid here, live • Be respectful of the critters who who critters the of respectful Be excrete waste. excrete California. and heed trail warnings. warnings. trail heed and their shell is used to both respire and and respire both to used is shell their limpet is considered a delicacy in Baja Baja in delicacy a considered is limpet areas. Please stick to the path path the to stick Please areas. and black. The keyhole at the apex of of apex the at keyhole The black. and the exact same spot after foraging. Owl Owl foraging. after spot same exact the • Only explore in designated designated in explore Only can range in color from tan, brown, brown, tan, from color in range can and return to to return and Ulva on graze They black. “keyhole”. Their mantle mantle Their “keyhole”. white, brown, and brown, white, of any kind is against the law. law. the against is kind any of ending in a large oval oval large a in ending profile shell mottled mottled shell profile federally protected area, taking taking area, protected federally fleshy colored mantle mantle colored fleshy 2 in. with a lumpy, low low lumpy, a with in. 2 small shell under their their under shell small • Remember you are entering a a entering are you Remember in. Most specimens are are specimens Most in. these limpets have a a have limpets these limpets, growing up to 4 4 to up growing limpets, intertidal, intertidal, - low the in the Pacific Coast true true Coast Pacific the Found on rock surfaces surfaces rock on Found These are the largest of of largest the are These Intertidal Safety Tips Safety Intertidal Keyhole Limpet Limpet Keyhole gigantea) Lottia ( Limpet Owl ) ) crenulata Megathura ( Mussels (Mytilus californianus) Sea Lettuce (Ulva californica) Seagrass (Phyllospadix scouleri) Ulva forms dense green, Seagrasses are flowering Mussel beds are firmly turf-like stands atop rocks plants that form large attached to the rocks in the mid- and low- clumps in the lower by tough strands intertidal. Consists of intertidal. Algae that grow cemented in place. smooth blades, roughly ¾ of an inch. Ulva leaves on the grasses are called Shells are tear-shaped are edible and quite epiphytes and the critters and dark blue-black in tasty, fresh or dried. that graze epiphytes are color. Mussels are called epifauna. commonly 3-5 in. long and open The Rocky Intertidal during high tide to filter feed on Dead Man’s Fingers (Codium fragile) Coralline algae (Corallina spp.) Welcome to one of the world’s most incoming plankton. Mussel beds are unique ecosystems. This vast expanse often interspersed with barnacles. Codium is a green algae Corallines are small pink where land meets sea supports a that forms large drooping plants with stony segments thriving body of marine organisms clumps with cylindrical that branch into a feather and plants all adapted to live under branches that are spongy in pattern. These are perhaps the harsh environmental pressures Gooseneck Barnacles (Pollicipies polymerus) characteristic of this area. Dictated texture. Codium is unique in the most abundant of by the gravitational pull of the moon Gooseneck barnacles that it only has one large intertidal species in S. and sun, the tides predictably flow in have a fleshy, muscular cell wall, the outer skin. California. and out daily creating a low, high, stalk reaching 4 to 6 in. and middle tidal zone. Each of these in length with a calcareous tip. They Wireweed (Sargassum agardhianum) Sea Bubble (Colpomenia sinuosa) zones maintains a unique community can be found in waiting for you to explore. Use this clumps interspersed This brown algae forms Colpomenia grows on pocket guide to help you in your with mussel beds. thick stands in the mid- to rocks and other seaweeds adventure and discover the amazing Once they animals that call the intertidal home. attach to the rocks as larvae, they do not low- intertidal. Averaging 1- in the mid intertidal. They move their entire lives. Barnacles filter 3 ft. long, they have smally are yellow-brown in color, feed when the tide is high using small leafy blades and spherical hollow and bubble-like, feather like appendages called cirri to floats. and 1-3 in wide. Guided adapted from: “Life Between the Tides” catch plankton. by: Brandon & Rokop form urchin barrens. barrens. urchin form ecosystem, they can run rampant and and rampant run can they ecosystem, nematocysts. nematocysts. pyrifera Macrocystis Kelp, urchin’s predators are removed from an an from removed are predators urchin’s underside of rocks or in sandy areas. areas. sandy in or rocks of underside their prey using stinging cells called called cells stinging using prey their crawling around and eating the Giant Giant the eating and around crawling frequently on Giant Kelp. When the the When Kelp. Giant on frequently 1 to 3 in. in diameter and found on the the on found and diameter in in. 3 to 1 algae that live in them. Anemone catch catch Anemone them. in live that algae tidepools. You will often find them them find often will You tidepools. voracious predators and feed feed and predators voracious tidepools are mostly small, ranging from from ranging small, mostly are tidepools coloration comes from the symbiotic symbiotic the from comes coloration In the kelp forest adjacent to the the to adjacent forest kelp the In to rocks. They are They rocks. to Bat stars in the in stars Bat green in color. Their color. in green crabs normally live normally crabs move around or stick stick or around move between their five arms. arms. five their between to 5 in. and are light light are and in. 5 to into the intertidal, these these intertidal, the into feet that help them them help that feet have web like structures structures like web have are often 3 3 often are but in., 10 to can be found swept swept found be can they have small tube tube small have they other sea stars they they stars sea other reach a diameter of up up of diameter a reach 1 ft. in size. Though they they Though size. in ft. 1 Along with their spines, spines, their with Along and many more. Unlike Unlike more. many and anemones. They can can They anemones. and can reach nearly nearly reach can and 4 in. in diameter. diameter. in in. 4 red, orange, brown, brown, orange, red, of the S. California California S. the of reddish brown in color color in brown reddish range between 2 and and 2 between range multitude of colors of of colors of multitude anemone is the largest largest the is anemone are deep purple to to purple deep are urchins sea Purple Bat stars come in a a in come stars Bat The solitary sea sea solitary The Globose Kelp Crabs Crabs Kelp Globose ) ) nuttalli Taliepus ( Crab Kelp Globose ) ) purpuratus Strongylocentrotus ( Urchin Sea ) ) zola Anthopleura ( Anemone ) miniata Patiria ( Star Bat without a permit. permit. a without and digesting the animal externally. externally. animal the digesting and of detritus. detritus. of illegal to take under a certain size and and size certain a under take to illegal pushing their stomachs out of their bodies, bodies, their of out stomachs their pushing consume plant material and other forms forms other and material plant consume as they do not like being in the sunlight. sunlight. the in being like not do they as their commercial importance, they are are they importance, commercial their by covering them with their long arms, arms, long their with them covering by but will “battle” when threatened.