Sponge (Dysidea fragilis)

Porifera (phylum)
Demospongiae (class)
Dictyoceratida (order)

Sponge (Dysidea fragilis)

Porifera (phylum)
Demospongiae (class)
Dictyoceratida (order)

Sponge (Dysidea fragilis)
[Bleach-treated supporting fibers]

Porifera (phylum)
Demospongiae (class)
Dictyoceratida (order)

Hydromedusa (Polyorchis penicillatus)

Cnidaria (phylum)
Hydrozoa (class)
Anthoathecata [Anthomedusae] (order)

Hydromedusa (Polyorchis penicillatus)

Cnidaria (phylum)
Hydrozoa (class)
Anthoathecata [Anthomedusae] (order)

By-the-wind sailor (Velella velella)

Cnidaria (phylum)
Hydrozoa (class)
Anthoathecata [Anthomedusae] (order)

By-the-wind sailor (Velella velella)

Cnidaria (phylum)
Hydrozoa (class)
Anthoathecata [Anthomedusae] (order)

Aggregating anemone (Anthopleura elegantissima)

Cnidaria (phylum)
Anthozoa (class)
Actiniaria (order)
Actiniidae (family)

Starburst anemone (Anthopleura sola)

Cnidaria (phylum)
Anthozoa (class)
Actiniaria (order)
Actiniidae (family)

Starburst anemone (Anthopleura sola)

Cnidaria (phylum)
Anthozoa (class)
Actiniaria (order)
Actiniidae (family)

California spiny lobster (Panulirus interruptus)

Arthropoda (phylum)
Crustacea (subphylum)
Malacostraca (class)
Eumalacostraca (sublass)
Decapoda (order)
Palinuridae (family)

Red rock crab (Cancer productus)

Arthropoda (phylum)
Crustacea (subphylum)
Malacostraca (class)
Eumalacostraca (subclass)
Decapoda (order)
Cancridae (family)

Globose kelp crab (Taliepus nuttallii)

Arthropoda (phylum)
Crustacea (subphylum)
Malacostraca (class)
Eumalacostraca (subclass)
Decapoda (order)
Epialtidae (family)

Globose kelp crab (Taliepus nuttallii)

Arthropoda (phylum)
Crustacea (subphylum)
Malacostraca (class)
Eumalacostraca (subclass)
Decapoda (order)
Epialtidae (family)

Shield-backed kelp crab (Pugettia producta)

Arthropoda (phylum)
Crustacea (subphylum)
Malacostraca (class)
Eumalacostraca (subclass)
Decapoda (order)
Epialtidae (family)

Shield-backed kelp crab (Pugettia producta)

Arthropoda (phylum)
Crustacea (subphylum)
Malacostraca (class)
Eumalacostraca (subclass)
Decapoda (order)
Epialtidae (family)

Pacific sand crab (Emerita analoga)

Arthropoda (phylum)
Crustacea (subphylum)
Malacostraca (class)
Eumalacostraca (subclass)
Decapoda (order)
Hippidae (family)

Spiny mole crab (Blepharipoda occidentalis)

Arthropoda (phylum)
Crustacea (subphylum)
Malacostraca (class)
Eumalacostraca (subclass)
Decapoda (order)
Blepharipodidae (family)

Spiny mole crab (Blepharipoda occidentalis)

Arthropoda (phylum)
Crustacea (subphylum)
Malacostraca (class)
Eumalacostraca (subclass)
Decapoda (order)
Blepharipodidae (family)

Spiny mole crab (Blepharipoda occidentalis)

Arthropoda (phylum)
Crustacea (subphylum)
Malacostraca (class)
Eumalacostraca (subclass)
Decapoda (order)
Blepharipodidae (family)

Goose barnacle (Pollicipes polymerus)

Arthropoda (phylum)
Crustacea (subphylum)
Hexanauplia (class)
Thecostraca (subclass)
Cirripedia (infraclass)
Scalpelliformes (order)
Pollicipedidae (family)

Buckshot barnacles (Chthamalus fissus)
(Darwin, 1854)

Arthropoda (phylum)
Crustacea (subphylum)
Hexanauplia (class)
Thecostraca (subclass)
Cirripedia (infraclass)
Sessilia (order)
Chthamalidae (family)

Red-striped acorn barnacle (Balanus pacificus?)

Arthropoda (phylum)
Crustacea (subphylum)
Hexanauplia (class)
Thecostraca (subclass)
Cirripedia (infraclass)
Sessilia (order)
Balanidae (family)

White-ribbed red barnacle (Megabalanus californicus)

Arthropoda (phylum)
Crustacea (subphylum)
Hexanauplia (class)
Thecostraca (subclass)
Cirripedia (infraclass)
Sessilia (order)
Balanidae (family)

American dog tick (Dermacentor variabilis)
[Female]
A potential vector for human diseases.

Arthropoda (phylum)
Chelicerata (subphylum)
Arachnida (class)
Ixodida (order)

American dog tick (Dermacentor variabilis)
[Male]
A potential vector for human diseases.

Arthropoda (phylum)
Chelicerata (subphylum)
Arachnida (class)
Ixodida (order)

Bagrada bug (Bagrada hilaris)

Arthropoda (phylum)
Hexapoda (subphylum)
Insecta (class)
Hemiptera (order)

Firebug (Pyrrhocoris apterus)

Arthropoda (phylum)
Hexapoda (subphylum)
Insecta (class)
Hemiptera (order)

California angle-wing katydid (Microcentrum californicum)

Arthropoda (phylum)
Hexapoda (subphylum)
Insecta (class)
Orthoptera (order)

California angle-wing katydid (Microcentrum californicum)

Arthropoda (phylum)
Hexapoda (subphylum)
Insecta (class)
Orthoptera (order)

Painted lady (Vanessa cardui)

Arthropoda (phylum)
Hexapoda (subphylum)
Insecta (class)
Lepidoptera (order)

California oak moth (Phryganidia californica)

Arthropoda (phylum)
Hexapoda (subphylum)
Insecta (class)
Lepidoptera (order)

Ten-lined June beetle (Polyphylla decemlineata)

Arthropoda (phylum)
Hexapoda (subphylum)
Insecta (class)
Coleoptera (order)

Ten-lined June beetle (Polyphylla decemlineata)

Arthropoda (phylum)
Hexapoda (subphylum)
Insecta (class)
Coleoptera (order)

Red-headed beetle (Podabrus pruinosus)

Arthropoda (phylum)
Hexapoda (subphylum)
Insecta (class)
Coleoptera (order)

Argentine ant (Linepithema humile)

Arthropoda (phylum)
Hexapoda (subphylum)
Insecta (class)
Hymenoptera (order)

Garden snail (Cornu aspersum)

Mollusca (phylum)
Gastropoda (class)
Heterobranchia (subclass)
Stylommatophora (order)
Helicidae

Cellar glass-snail (Oxychilus cellarius)

Mollusca (phylum)
Gastropoda (class)
Heterobranchia (subclass)
Stylommatophora (order)
Oxychilidae

Three-band garden slug (Ambigolimax valentianus)

Mollusca (phylum)
Gastropoda (class)
Heterobranchia (subclass)
Stylommatophora (order)
Limacidae

Bat star (Asterina miniata)

Echinodermata (phylum)
Asteroidea (class)
Valvatida (order)

Purple sea urchin (Strongylocentrotus purpuratus)
[Test/"Skeleton"]

Echinodermata (phylum)
Echinoidea (class)
Camarodonta (order)

Eccentric sand dollar (Dendraster excentricus)
[Test/"Skeleton"]

Echinodermata (phylum)
Echinoidea (class)
Clypeasteroida (order)

Colonial ascidian (Aplidium sp.)
[Almost a vertebrate!]

Chordata (phylum)
Urochordata [Tunicata] (subphylum)
Ascidiacea (class)
Aplousobranchia (order)

Colonial ascidian (Aplidium sp.)
[Almost a vertebrate!]

Chordata (phylum)
Urochordata [Tunicata] (subphylum)
Ascidiacea (class)
Aplousobranchia (order)

Colonial ascidian (Aplidium sp.)
[Almost a vertebrate!]

Chordata (phylum)
Urochordata [Tunicata] (subphylum)
Ascidiacea (class)
Aplousobranchia (order)

Salp (Thetys vagina)
[Almost a vertebrate!]

Chordata (phylum)
Urochordata [Tunicata] (subphylum)
Thaliacea (class)
Salpida (order)

Salp (Thetys vagina)
[Almost a vertebrate!]

Chordata (phylum)
Urochordata [Tunicata] (subphylum)
Thaliacea (class)
Salpida (order)

Salp (Thetys vagina)

Chordata (phylum)
Urochordata [Tunicata] (subphylum)
Thaliacea (class)
Salpida (order)