Nudibranchs and other Sea Slugs
(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
Bubble Shells
Aglajidae
Aglaja
Acteonidae
Barrel Shell
Limapontiidae
Hansine's Egg Eater / Sapsucker
Pleurobranchidae
Sidegills
Aplysiidae
Zebra Leafslug
Clionidae
Sea Angel
Cymbuliidae
Sea Butterfly
Onchidiidae
Leather Limpet
Plakobranchidae
Sapsucker
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.
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
Cumanotidae
Aeolids
Tritoniidae
Orange-Peel Nudibranch and Tritonias
Dorididae
Dorids and Sea Lemons
This page last revised: 9-21-2022
Aeolidiidae
Aeolids
Dendrodorididae
Dorid
Unidentiidae
Aeolid
Janolidae
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
Myrrhinidae
Opalescent Nudibranch 
