(Oregon to Southeast Alaska)Click on the name of the Order to view the species within that category.
A representative sampling of species for each family are shown
to give an example of the characteristics exhibited by that group.
Hermaeidae Sapsucker Haminoeidae
Aglajidae Aglaja Limapontiidae Hansine's Egg Eater / Sapsucker Pleurobranchidae Sidegills Aplysiidae Zebra Leafslug Clionidae
Cymbuliidae Sea Butterfly
A few of these first families have shells, but they are actually opisthobranchs. They are often grouped near the shelled gastropods in books. We've placed them in both locations to aid in identification.
Corambidae Corambids Many
southern species of nudibranchs may be spotted in the Pacific Northwest
during El Niņo Events. See our page covering El Niņo Event Range Shifts. Tethyidae Lion's Melibe Arminiidae Striped Nudibranch Aegiretidae Aegires Goniodorididae Ancula Okenia Calycidorididae Diaphorodoris Nudibranch Egg Masses Samples of some nudibranch egg masses
(click on photo to enlarge)
Actinocyclidae Dorid Gastropteridae Stomach Wing
This species is not a nudibranch. It is another type ofOnchidiidae
gastropod. Since it is without a shell, and the only one
of its kind we show, we include it here.
Cumanotidae Aeolids Tritoniidae Orange-Peel Nudibranch and Tritonias Dorididae Dorids and Sea Lemons
This page last revised: 3-11-2018
Aeolidiidae Aeolids Dotidae Doto Dendrodorididae Dorid Unidentiidae Aeolid Proctonotidae Janolus Abronicidae Aeolid Cuthonidae Cuthona Cuthonellidae Aeolids Eubranchidae Aeolid
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Citation: Pacific Northwest Shell Club, www.PNWSC.org
Apataidae Aeolid Diaphanidae Diaphana Acteocinidae Barrel-bubble Shells Flabellinopsidae Aeolid Paracoryphellidae Aeolid
Facelinidae Opalescent Nudibranch