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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.

Amphoriscidae 1
smooth urn sponge 2
Leucilla nuttingi
Raspailiidae 3
Haliclona cinerea 4
Red Velvet Sponge 5
Clathria pennata
Red Beard Sponge 6
Clathria prolifera
Bread-crumb Sponge 7
Halichondria panicea
Halichondria bowerbanki 8
Polyorchis 9
Giant Bell Jelly 10
Scrippsia pacifica
Hydroids 11
Hydroidolina
Sertulariidae 6
Ectopleura 12
Pacific Sea Nettle 13
Chrysaora fuscescens
Moonglow Anemone 14
Anthopleura artemisia
white burrowing anemone 15
Flosmaris grandis
Striped Green Sea Anemone 16
Diadumene lineata
Diadumene 17
Plumose Anemone 18
Metridium senile
Slender Sea Pen 9
Stylatula elongata
Pacific Sea Gooseberry 17
Pleurobrachia bachei
Stylochoidea 19
green ribbon worm 20
Emplectonema gracile
Purple Ribbon Worm 2
Paranemertes peregrina
Tubulanus 21
Arenicola 7
Nereididae 7
Pile Worm 22
Nereis vexillosa
Eighteen-scaled Worm 23
Halosydna brevisetosa
Fifteen-scaled Worm 6
Harmothoe imbricata
Honeycomb Worms 24
Sabellariidae
Myxicola 25
Split-branch Feather Duster Worm 26
Schizobranchia insignis
Megasyllis nipponica 27
Pista pacifica 2
Spaghetti Worms 28
Terebellidae
Pacific Acorn Barnacle 29
Balanus glandula
Chthamalus 30
Gooseneck Barnacle 31
Pollicipes polymerus
Pink Volcano Barnacle 32
Tetraclita rubescens
Wormpods 6
Anthuroidea
Cirolanidae 33
Idotea 34
Eelgrass Isopod 35
Pentidotea resecata
Rockweed isopod 6
Pentidotea wosnesenskii
Western Sea Slater 36
Ligia occidentalis
Gnorimosphaeroma 37
New Zealand Burrowing Isopod 7
Sphaeroma quoianum
Typical Seapills 38
Sphaeromatidae
Skeleton Shrimp 39
Caprellidae
Bivalve Scuds 40
Melitidae
California Beach Flea 41
Megalorchestia californiana
Pacific beach hopper 42
Traskorchestia traskiana
Amphipods 7
Amphipoda
Red Rock Crab 23
Cancer productus
Graceful Rock Crab 43
Metacarcinus gracilis
Dungeness Crab 44
Metacarcinus magister
Pacific Rock Crab 23
Romaleon antennarium
Northern Kelp Crab 45
Pugettia producta
Striped Shore Crab 46
Pachygrapsus crassipes
Tuberculate Pear Crab 47
Pyromaia tuberculata
Pacific Hairy Hermit Crab 48
Pagurus hirsutiusculus
pubescent porcelain crab 6
Pachycheles pubescens
Thickclaw Porcelain Crab 49
Pachycheles rudis
Chocolate Porcelain Crab 6
Petrolisthes manimaculis
Heptacarpus 6
Purple Shore Crab 50
Hemigrapsus nudus
Yellow Shore Crab 51
Hemigrapsus oregonensis
Ammothea hilgendorfi 9
Sea Spiders 52
Pantopoda
Neomolgus littoralis 53
Hind's Chiton 29
Mopalia hindsii
Mossy Chiton 54
Mopalia muscosa
Gould's baby chiton 55
Cyanoplax dentiens
California Spiny Chiton 6
Nuttallina californica
Lined Chiton 56
Tonicella lineata
Flame Lined Chiton 6
Tonicella lokii
Dire Whelk 57
Lirabuccinum dirum
Onyx Slippersnail 28
Crepidula onyx
Carinate Dovesnail 6
Alia carinata
Wrinkled Amphissa 58
Amphissa columbiana
Variegate Amphissa 7
Amphissa versicolor
Mitrella gausapata 59
Lacuna Snails 28
Lacuna
Eroded Periwinkle 60
Littorina keenae
Common Periwinkle 6
Littorina littorea
Checkered Periwinkle 61
Littorina scutulata
Angular Unicorn 62
Acanthinucella spirata
Wrinkled Purple 23
Nucella lamellosa
Striped Dogwinkle 63
Nucella ostrina
Purple Olive Snail 64
Callianax biplicata
Whitecap Limpet 2
Acmaea mitra
Black Limpet 2
Lottia asmi
Fingered Limpet Complex 27
Lottia digitalis
Owl Limpet 33
Lottia gigantea
File Limpet 6
Lottia limatula
Boreal limpet 65
Lottia paradigitalis
Shield Limpet 23
Lottia pelta
Rough Limpet 66
Lottia scabra
Plate Limpet 6
Lottia scutum

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

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