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Intertidal Life of Yerba Buena Island

A guide to the invertebrates, seaweeds, and vertebrates found in the intertidal areas of Yerba Buena Island. Data was primarily collected during surveys conducted by the California Academy of Sciences in 2019-2021 and during bioblitzes held in 2017-2021.

Pacific Acorn Barnacle 1
Balanus glandula
Chthamalus 2
Gooseneck Barnacle 3
Pollicipes polymerus
Pink Volcano Barnacle 4
Tetraclita rubescens
Wormpods 5
Anthuroidea
Cirolanidae 6
Idotea 7
Eelgrass Isopod 8
Pentidotea resecata
Rockweed isopod 5
Pentidotea wosnesenskii
Western Sea Slater 9
Ligia occidentalis
Gnorimosphaeroma 10
New Zealand Burrowing Isopod 11
Sphaeroma quoianum
Typical Seapills 12
Sphaeromatidae
Skeleton Shrimp 13
Caprellidae
Bivalve Scuds 14
Melitidae
California Beach Flea 15
Megalorchestia californiana
Pacific beach hopper 16
Traskorchestia traskiana
Amphipods 11
Amphipoda
Red Rock Crab 17
Cancer productus
Graceful Rock Crab 18
Metacarcinus gracilis
Dungeness Crab 19
Metacarcinus magister
Pacific Rock Crab 17
Romaleon antennarium
Northern Kelp Crab 20
Pugettia producta
Striped Shore Crab 21
Pachygrapsus crassipes
Tuberculate Pear Crab 22
Pyromaia tuberculata
Pacific Hairy Hermit Crab 23
Pagurus hirsutiusculus
pubescent porcelain crab 5
Pachycheles pubescens
Thickclaw Porcelain Crab 24
Pachycheles rudis
Chocolate Porcelain Crab 5
Petrolisthes manimaculis
Heptacarpus 5
Purple Shore Crab 25
Hemigrapsus nudus
Yellow Shore Crab 26
Hemigrapsus oregonensis

Edited by Rebecca Johnson, some rights reserved (CC BY-SA)

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