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Opisthobranchs & Nudibranchs of the World

Opisthobranchs & Nudibranchs of the World

Document your opisthobranch and nudibranch encounters by taking photographs and adding descriptive notes. Explain as much as you can about the location and conditions in the place where it was found. Sign in to join mission

Opisthobranchs & Nudibranchs of the World
Created by

The MnMs

Website 348 participants 1,156 spottings

Opistobranchs are a large and diverse group of marine gastropods. They include several types of sea slugs: sea hares, sea angels, sea butterflies, and many families of Nudibranchia. They exist in an impressive diversity of sizes, colors and shapes and are distributed in sea waters all over the world. Species exist that are adapted to different climates, salinity, or depth. Help us gather information about these maginificent creatures by adding your spottings here in this mission.

Opisthobranchs & Nudibranchs of the World

Recent Spottings

Phyllidiopsis phiphiensis Marek Koszorek 1 0 Phyllidiopsis phiphiensis
Hypselodoris kanga Marek Koszorek 1 0 Hypselodoris kanga
Coryphellina Marek Koszorek 6 1 Coryphellina
Phyllidia marindica Marek Koszorek 3 0 Phyllidia marindica
Nudibranch AlbertKang 15 6 Nudibranch
Phyllidia ocellata Marek Koszorek 4 0 Phyllidia ocellata
Felimida krohni Marek Koszorek 10 0 Felimida krohni
Common Gray Sea Slug Machi 1 0 Common Gray Sea Slug
Nudibranch AlbertKang 3 0 Nudibranch
Nudibranch AlbertKang 4 2 Nudibranch
Nudibranch AlbertKang 1 0 Nudibranch
Phyllidia flava Marek Koszorek 1 0 Phyllidia flava
Sea Lemon Machi 1 0 Sea Lemon
Phyllidia varicosa JordiPrats 4 2 Phyllidia varicosa
Phyllidia ocellata Marek Koszorek 9 0 Phyllidia ocellata
Flatworm AlbertKang 6 2 Flatworm
Nudibranch AlbertKang 4 0 Nudibranch
Nudibranch AlbertKang 6 0 Nudibranch
Felimare orsinii Marek Koszorek 1 0 Felimare orsinii
Felimare fontandraui Marek Koszorek 6 2 Felimare fontandraui
Crested aeolis Marek Koszorek 13 6 Crested aeolis
Aglaja tricolorata Marek Koszorek 2 0 Aglaja tricolorata
Edmundsella pedata Marek Koszorek 2 0 Edmundsella pedata
Peltodoris atromaculata Marek Koszorek 2 0 Peltodoris atromaculata
Chromodoris annae Marek Koszorek 1 0 Chromodoris annae
Chromodoris magnifica Marek Koszorek 1 0 Chromodoris magnifica
Goniobranchus geometricus Marek Koszorek 0 0 Goniobranchus geometricus
Ceratosoma trilobatum Marek Koszorek 0 0 Ceratosoma trilobatum
Goniobranchus geminus Marek Koszorek 12 5 Goniobranchus geminus
Dermatobranchus ornatus Marek Koszorek 1 0 Dermatobranchus ornatus
Goniobranchus tinctorius Marek Koszorek 13 8 Goniobranchus tinctorius
Aldisa erwinkoehleri Marek Koszorek 10 5 Aldisa erwinkoehleri
Goniobranchus sinensis Marek Koszorek 2 3 Goniobranchus sinensis
Ceratosoma tenue Marek Koszorek 1 0 Ceratosoma tenue
Hypselodoris bollandi Marek Koszorek 1 0 Hypselodoris bollandi
Goniobranchus hintuanensis Marek Koszorek 1 0 Goniobranchus hintuanensis
Goniobranchus annulatus Marek Koszorek 1 0 Goniobranchus annulatus
Trinchesia sibogae Marek Koszorek 3 0 Trinchesia sibogae
Nudibranch AlbertKang 11 4 Nudibranch
Bullock's Hypselodoris Marek Koszorek 0 0 Bullock's Hypselodoris
Willey's Halgerda Nudibranch AlbertKang 12 3 Willey's Halgerda Nudibranch
Phyllidiella rudmani Marek Koszorek 7 2 Phyllidiella rudmani
Felimare picta eulalia rubio 2 0 Felimare picta
Phyllidiella pustulosa Marek Koszorek 3 1 Phyllidiella pustulosa
Phyllidia multituberculata Marek Koszorek 3 0 Phyllidia multituberculata
Phyllidia varicosa Marek Koszorek 1 0 Phyllidia varicosa
Risbecia pulchella Marek Koszorek 3 0 Risbecia pulchella
Flabellina pedata Marek Koszorek 1 0 Flabellina pedata
Felimare picta Marek Koszorek 5 0 Felimare picta
Ornate Batwing Slug AlbertKang 2 0 Ornate Batwing Slug

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