<p> Table S13 Quantitative prey composition of blue sharks within the SBC subregion. A </p><p> total of 84 stomachs containing food were examined. Prey items are shown by decreasing</p><p> values of GII. See methods for descriptions of the measured values.</p><p>Prey Species W (g) %W N %N F %F GII IRI %IRI Argonauta sp. 409.8 4.66 128 17.07 32 38.10 34.54 827.66 31.80 Gonatus spp. 42.9 0.49 75 10.00 40 47.62 33.55 499.39 19.19 Jumbo squid, Dosidicus gigas 3399.2 38.65 18 2.40 13 15.48 32.63 635.26 24.41 Unidentified Euphausiidae 219.9 2.50 300 40.00 1 1.19 25.22 50.60 1.94 Flowervase jewell squid, Histioteuthis dofleini 1.5 0.02 65 8.67 25 29.76 22.20 258.45 9.93 Histioteuthis spp. 0.7 0.01 29 3.87 13 15.48 11.17 59.96 2.30 Ocean sunfish, Mola mola 1292.7 14.70 2 0.27 2 2.38 10.01 35.63 1.37 Pelagic red crab, Pleuroncodes planipes 387.0 4.40 38 5.07 6 7.14 9.59 67.62 2.60 Seven-arm octopus, Haliphron atlanticus 0.3 <0.01 13 1.73 10 11.90 7.88 20.67 0.79 Unidentified Teuthoidea 20.7 0.23 11 1.47 8 9.52 6.48 16.21 0.62 Spiny dogfish, Squalus acanthias 839.5 9.54 1 0.13 1 1.19 6.27 11.52 0.44 Market squid, Loligo opalescens 0.2 <0.01 9 1.20 8 9.52 6.19 11.45 0.44 Pacific mackerel, Scomber japonicus 418.2 4.75 7 0.93 4 4.76 6.03 27.09 1.04 Unidentified Teleostei 170.9 1.94 6 0.80 6 7.14 5.71 19.59 0.75 Vampire squid, Vampyroteuthis infernalis 19.6 0.22 9 1.20 7 8.33 5.63 11.86 0.46 Octopoteuthis sp. 2.2 0.03 8 1.07 7 8.33 5.44 9.10 0.35 Soupfin shark, Galeorhinus galeus 497.3 5.65 2 0.27 2 2.38 4.79 14.10 0.54 Japetella sp. 0.1 <0.01 6 0.80 6 7.14 4.59 5.72 0.22 Luvar, Luvarus imperialis 366.9 4.17 1 0.13 1 1.19 3.17 5.12 0.20 Pacific saury, Cololabis saira 74.8 0.85 5 0.67 2 2.38 2.25 3.61 0.14 Opah, Lampris guttatus 175.4 1.99 1 0.13 1 1.19 1.92 2.53 0.10 Boreopacific gonate squid, Gonatopsis borealis 4.7 0.05 3 0.40 2 2.38 1.64 1.08 0.04 Unidentified Elasmobranchii 115.2 1.31 1 0.13 1 1.19 1.52 1.72 0.07 Sebastes spp. 102.8 1.17 1 0.13 1 1.19 1.44 1.55 0.06 Striped mullet, Mugil cephalus 100.0 1.14 1 0.13 1 1.19 1.42 1.51 0.06 Skipjack tuna, Katsuwonus pelamis 64.5 0.73 1 0.13 1 1.19 1.19 1.03 0.04 Common tern, Sterna hirundo 36.6 0.42 1 0.13 1 1.19 1.00 0.65 0.03 Unidentified Cephalopoda 18.2 0.21 1 0.13 1 1.19 0.88 0.41 0.02 Pacific hake, Merluccius productus <0.1 <0.01 2 0.27 1 1.19 0.84 0.32 0.01 Bocaccio, Sebastes paucispinis 9.7 0.11 1 0.13 1 1.19 0.83 0.29 0.01 Jack mackerel, Trachurus symmetricus 3.2 0.04 1 0.13 1 1.19 0.79 0.20 0.01 Unidentified Invertebrate 0.7 0.01 1 0.13 1 1.19 0.77 0.17 0.01 Abraliopsis sp. 0.1 <0.01 1 0.13 1 1.19 0.76 0.16 0.01 Opisthoteuthis sp. <0.1 <0.01 1 0.13 1 1.19 0.76 0.16 0.01</p>