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Washington Sea Slugs - Nudibranchs (and other marine Heterobranchia) of Washington

Once you know how to start looking for sea slugs you start finding them everywhere! This guide endeavors to compile all sea slugs, nudibranch, and nudibranch adjacent species sighted in Washington State.

Dark Doto 1
Doto kya
Hammerhead Doto 2
Doto amyra
Dendronotus albopunctatus 3
White Dendronotus 4
Dendronotus albus
Dendronotus dalli 5
Rainbow Nudibranch 6
Dendronotus iris
Dendronotus kamchaticus 7
Dendronotus robilliardi 7
Dendronotus rufus 3
Stubby-frond Dendronotus 8
Dendronotus subramosus
Branched Dendronotus 1
Dendronotus venustus
Lion's Mane Nudibranch 9
Melibe leonina
Pacifia amica 7
Cumanotus fernaldi 5
Green Balloon Aeolid 1
Eubranchus olivaceus
Eubranchus rupium 10
Homely Aeolid 11
Eubranchus rustyus
Eubranchus sanjuanensis 12
Fiona pinnata 13
Rose-pink Cuthona 1
Cuthona divae
Cuthonella concinna 10
British Columbia Aeolid 1
Catriona columbiana
White-crusted Aeolid 4
Trinchesia albocrusta
Zelentia nepunicea 7
Zelentia willowsi 7
Yellow-head Aeolid 1
Diaphoreolis flavovulta
Green Aeolis 14
Diaphoreolis viridis
Ziminella japonica 5
Smooth-tooth Aeolis 15
Apata pricei
Coryphella pseudoverrucosa
Red-fingered Coryphella
Coryphella verrucosa
predaceous aeolis 6
Himatina trophina
Three-lined Aeolid 4
Orienthella trilineata
Striped Nudibranch 3
Armina californica
shag-rug nudibranch 16
Aeolidia loui
Common Grey Sea Slug 17
Aeolidia papillosa
Thick-horned Nudibranch 4
Hermissenda crassicornis
Opalescent Nudibranch 15
Hermissenda opalescens
White-lined Dirona 18
Dirona albolineata
golden dirona 19
Dirona pellucida
White-and-Orange-Tipped Nudibranch 20
Antiopella fusca
Tritonia exsulans 7
Diamondback Tritonia 15
Tritonia festiva
Giant Orange Tochui 6
Tochuina gigantea
Red Dorid 1
Rostanga pulchra
Heath's Dorid 11
Geitodoris heathi
Spotted Leopard Dorid 21
Diaulula odonoghuei
Diaulula sandiegensis
Sea Lemon 21
Peltodoris nobilis
Monterey Doris 4
Doris montereyensis
Giant White Doris 22
Doris odhneri
Humped Ancula Sea Slug 4
Ancula gibbosa
Acanthodoris atrogriseata 23
Brown Horned Dorid 11
Acanthodoris brunnea
Hudson's Horned Dorid 4
Acanthodoris hudsoni
Orange-peel Dorid 18
Acanthodoris lutea
Nanaimo Horned Dorid 24
Acanthodoris nanaimoensis
barnacle nudibranch 25
Onchidoris bilamellata
Fuzzy Onchidoris 16
Onchidoris muricata
Janna's Dorid 16
Knoutsodonta jannae
Onchidoris evincta 7
Adalaria evincta
Adalaria proxima 26
Loy thompsoni 27
Pacific Corambe 15
Corambe pacifica
Steinberg's Corambe 28
Corambe steinbergae
Ridge-tailed Dorid 15
Diaphorodoris lirulatocauda
Orangetip Seaslugs 21
Limacia
Cockerell's Dorid 21
Limacia cockerelli
Sea Clown Triopha 15
Triopha catalinae
Spotted Triopha 16
Triopha maculata
Triopha modesta 29
Palio nothus 30
Palio zosterae 3
Cadlina jannanicholsae 15
Yellow-edged Cadlina 15
Cadlina luteomarginata
Modest Cadlina 15
Cadlina modesta
Aldisa cooperi 6
Chan's Dorid 4
Hallaxa chani

Edited by Luan Roberts, some rights reserved (CC BY-SA)

Photo Credits

  • 1. (c) Ken-ichi Ueda, some rights reserved (CC BY)
  • 2. (c) Leslie Flint, some rights reserved (CC BY-NC), uploaded by Leslie Flint
  • 3. (c) Karolle Wall, some rights reserved (CC BY-NC), uploaded by Karolle Wall
  • 4. (c) Ken-ichi Ueda, some rights reserved (CC BY), uploaded by Ken-ichi Ueda
  • 5. (c) Sara Thiebaud, some rights reserved (CC BY-NC), uploaded by Sara Thiebaud
  • 6. (c) Dan Hershman, some rights reserved (CC BY)
  • 7. (c) karin fletcher, some rights reserved (CC BY-NC), uploaded by karin fletcher
  • 8. (c) Alison Young, some rights reserved (CC BY-NC), uploaded by Alison Young
  • 9. (c) scuddlebutt, some rights reserved (CC BY-NC), uploaded by scuddlebutt
  • 10. (c) Jørn Ari, some rights reserved (CC BY-NC), uploaded by Jørn Ari
  • 11. (c) Ken-ichi Ueda, some rights reserved (CC BY-NC-SA)
  • 12. (c) Brenna Green, some rights reserved (CC BY-NC-ND), uploaded by Brenna Green
  • 13. (c) passiflora4, some rights reserved (CC BY-NC), uploaded by passiflora4
  • 14. (c) Bernard Picton, some rights reserved (CC BY), uploaded by Bernard Picton
  • 15. (c) Robin Gwen Agarwal, some rights reserved (CC BY-NC), uploaded by Robin Gwen Agarwal
  • 16. (c) Donna Pomeroy, some rights reserved (CC BY-NC), uploaded by Donna Pomeroy
  • 17. (c) lhillmann, some rights reserved (CC BY-NC)
  • 18. (c) matt knoth, some rights reserved (CC BY-NC-ND)
  • 19. (c) Jeff Goddard, some rights reserved (CC BY-NC), uploaded by Jeff Goddard
  • 20. (c) Minette Layne, some rights reserved (CC BY-SA)
  • 21. (c) Robin Agarwal (ANudibranchMom on iNaturalist), some rights reserved (CC BY-NC)
  • 22. (c) saraellison, some rights reserved (CC BY-NC)
  • 23. (c) Erin McKittrick, some rights reserved (CC BY), uploaded by Erin McKittrick
  • 24. (c) amy lemur, some rights reserved (CC BY-NC-ND)
  • 25. (c) Minette Layne, some rights reserved (CC BY)
  • 26. (c) Paul Norwood, some rights reserved (CC BY-NC), uploaded by Paul Norwood
  • 27. (c) smithsonian_marinegeo, some rights reserved (CC BY-NC-SA), uploaded by smithsonian_marinegeo
  • 28. (c) 2005 California Academy of Sciences, some rights reserved (CC BY-NC-SA)
  • 29. (c) nwisland, some rights reserved (CC BY-NC)
  • 30. (c) Bernard Picton, some rights reserved (CC BY-SA)

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