Sea slug is a common name for some marine invertebrates with varying levels of resemblance to terrestrial slugs. Most creatures known as sea slugs are actually gastropods, i.e. they are sea snails (marine gastropod mollusks) that over evolutionary time have either completely lost their shells, or have seemingly lost their shells due to having a greatly reduced or internal shell. The name "sea slug" is most often applied to nudibranchs, as well as to a paraphyletic set of other marine gastropods without obvious shells. Learn more about Sea slug
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Sea Slug Species Videos
View All Sea Slug Videos
Common Name | Scientific Name | Conservation Status |
Baba's Phyllidia Nudibranch (2 videos) | Phyllidia babai | Not Available |
Batangas Halgerda Nudibranch (13 videos) | Halgerda batangas | Not Available |
Beautiful Hypselodoris Nudibranch (1 videos) | Hypselodoris maridadilus | Not Available |
Beautiful Risbecia Nudibranch ( videos) | Hypselodoris pulchella | Not Available |
Black-gill Phestilla Nudibranch (3 videos) | Phestilla melanobrachia | Not Available |
Black-lined Sapsucking Slug (5 videos) | Cyerce nigra | Not Available |
Black-margin Glossodoris Nudibranch ( videos) | Doriprismatica atromarginata | Not Available |
Blue Dorid Nudibranch (7 videos) | Hypselodoris bullockii | Not Available |
Blue Velvet Headshield Slug (3 videos) | Chelidonura varians | Not Available |
Blunt-end Sea Hare (8 videos) | Dolabella auricularia | Not Available |
Bordered Roboastra Nudibranch (3 videos) | Roboastra luteolineata | Not Available |
Brock's Pleurobranch (2 videos) | Pleurobranchaea brockii | Not Available |
Bumpy Mexichromis Nudibranch (1 videos) | Mexichromis multituberculata | Not Available |
California Black Seahare (4 videos) | Aplysia vaccaria | Not Available |
California Seahare (5 videos) | Aplysia californica | Not Available |
Carlson's Halgerda Nudibranch (2 videos) | Halgerda carlsoni | Not Available |
Chamberlain's Nembrotha (10 videos) | Nembrotha chamberlaini | Not Available |
Chinese Dragon Nudibranch (54 videos) | Pteraeolidia ianthina | Not Available |
Co's Chromodoris Nudibranch ( videos) | Goniobranchus coi | Not Available |
Creamy Chromodoris Nudibranch ( videos) | Goniobranchus fidelis | Not Available |
Crested Nembrotha (14 videos) | Nembrotha cristata | Not Available |
Desirable Flabellina Nudibranch (7 videos) | Flabellina exoptata | Not Available |
Double-ringed Flabellina Nudibranch (3 videos) | Flabellina bilas | Not Available |
Emma's Hypselodoris Nudibranch (6 videos) | Hypselodoris emma | Not Available |
Fish Net Hypselodoris Nudibranch (2 videos) | Hypselodoris iacula | Not Available |
Flatworm Discodoris Nudibranch (17 videos) | Discodoris boholiensis | Not Available |
Funeral Jorunna Nudibranch (16 videos) | Jorunna funebris | Not Available |
Gabriela's Tambja Nudibranch (2 videos) | Tambja gabrielae | Not Available |
Gardiner's Headshield Slug (3 videos) | Philinopsis gardineri | Not Available |
Geometric Chromodoris Nudibranch ( videos) | Goniobranchus geometricus | Not Available |
Ghost Melibe Nudibranch (10 videos) | Melibe engeli | Not Available |
Giant Hypselodoris Nudibranch (15 videos) | Hypselodoris apolegma | Not Available |
Girdled Glossodoris Nudibranch (26 videos) | Glossodoris cincta | Not Available |
Grand Pleurobranch (6 videos) | Pleurobranchus grandis | Not Available |
Green Melibe Nudibranch (10 videos) | Melibe viridis | Not Available |
Halgerda Reticulidia Nudibranch (3 videos) | Reticulidia halgerda | Not Available |
Headband Headshield Slug (11 videos) | Chelidonura inornata | Not Available |
Headshield Slug (21 videos) | Nakamigawaia spiralis | Not Available |
Heron Ardeadoris Nudibranch (3 videos) | Ardeadoris egretta | Not Available |
Hooded Nudibranch (44 videos) | Melibe leonina | Not Available |
Horned Nudibranch (11 videos) | Hermissenda crassicornis | Not Available |
Indian Nudibranch (6 videos) | Caloria indica | Not Available |
Indian Sea Hare (3 videos) | Notarchus indicus | Not Available |
Kanga Hypselodoris Nudibranch (1 videos) | Hypselodoris kanga | Not Available |
Kubaryana's Nembrotha (8 videos) | Nembrotha kubaryana | Not Available |
Kunie's Chromodoris Nudibranch ( videos) | Goniobranchus kuniei | Not Available |
Kuro Sapsucking Slug (4 videos) | Costasiella kuroshimae | Not Available |
Leopard Chromodoris Nudibranch (36 videos) | Chromodoris leopardus | Not Available |
Leopard Nudibranch (13 videos) | Hypselodoris tryoni | Not Available |
Lettuce Slug (1 videos) | Elysia crispata | Not Available |
Lined Nembrotha (2 videos) | Nembrotha lineolata | Not Available |
Loch's Chromodori (1 videos) | Chromodoris lochi | Not Available |
Lovely Headshield Slug (2 videos) | Chelidonura amoena | Not Available |
Lumpy Asteronotus Nudibranch (2 videos) | Asteronotus cespitosus | Not Available |
Magnificent Chromodoris Nudibranch (11 videos) | Chromodoris magnifica | Not Available |
Many-lobed Ceratosoma Nudibranch (6 videos) | Ceratosoma tenue | Not Available |
Marten's Sidegill Slug (2 videos) | Berthella martensi | Not Available |
Miller's Nembrotha (3 videos) | Nembrotha milleri | Not Available |
Moon-headed Sidegill Slug (5 videos) | Euselenops luniceps | Not Available |
Morose Nudibranch (29 videos) | Tambja morosa | Not Available |
Naked Sea Butterfly (8 videos) | Clione limacina | Not Available |
Nudibranch ( videos) | Flabellina nobilis | Not Available |
Ocellated Phyllidia Nudibranch (6 videos) | Phyllidia ocellata | Not Available |
Orange Peel Nudibranch (1 videos) | Tochuina tetraquetra | Not Available |
Orange-tipped Flabellina Nudibranch (1 videos) | Flabellina macassarana | Not Available |
Ornate Sapsucking Slug (1 videos) | Elysia ornata | Not Available |
Painted Hypselodoris Nudibranch (1 videos) | Hypselodoris infucata | Not Available |
Painted Thecacera (15 videos) | Thecacera picta | Not Available |
Papillose Melibe Nudibranch (4 videos) | Melibe papillosa | Not Available |
Pimpled Phyllidiella Nudibranch (1 videos) | Phyllidiella pustulosa | Not Available |
Psychedelic Batwing Slug (3 videos) | Sagaminopteron psychedelicum | Not Available |
Red Bumpy Gymnodoris Nudibranch (3 videos) | Gymnodoris rubropapulosa | Not Available |
Red Platydoris Nudibranch (4 videos) | Platydoris sanguinea | Not Available |
Red-lined Jorunna Nudibranch (9 videos) | Jorunna rubescens | Not Available |
Redline Flabellina Nudibranch (6 videos) | Flabellina rubrolineata | Not Available |
Sea Butterfly (7 videos) | Limacina helicina | Not Available |
Sea Slug ( videos) | Chromodoris annae | Not Available |
Sea-clown Triopha (3 videos) | Triopha catalinae | Not Available |
Showy Headshield Slug (1 videos) | Philinopsis speciosa | Not Available |
Siboga Cuthona Nudibranch (1 videos) | Cuthona sibogae | Not Available |
Sky Blue Phyllidia Nudibranch (3 videos) | Phyllidia coelestis | Not Available |
Slender T-bar Ceratosoma Nudibranch (4 videos) | Ceratosoma gracillimum | Not Available |
Solar-powered Phyllodesmium Nudibranch (27 videos) | Phyllodesmium longicirrum | Not Available |
Spanish Dancer (155 videos) | Hexabranchus sanguineus | Not Available |
Spanish Shawl Nudibranch (22 videos) | Flabellina iodinea | Not Available |
Spotted Seahare (4 videos) | Aplysia dactylomela | Not Available |
Starry Hoplodoris Nudibranch (3 videos) | Hoplodoris estrelyado | Not Available |
Strawberry Nudibranch (3 videos) | Gymnodoris aurita | Not Available |
Streaked Chromodoris Nudibranch (1 videos) | Chromodoris strigata | Not Available |
Swollen Phyllidia Nudibranch (22 videos) | Phyllidia varicosa | Not Available |
Three-lobed T-bar Nudibranch (13 videos) | Ceratosoma trilobatum | Not Available |
Threeline Aeoli (1 videos) | Flabellina trilineata | Not Available |
Two-band Chromodoris Nudibranch ( videos) | Goniobranchus verrieri | Not Available |
Variable Neon Slug (12 videos) | Nembrotha nigerrima | Not Available |
Wallan's Chromodori (3 videos) | Chromodoris willani | Not Available |
Wavy Sapsucking Slug (5 videos) | Thuridilla undula | Not Available |
White-lined Dirona (8 videos) | Dirona albolineata | Not Available |
Yamasu's Cuthona Nudibranch (5 videos) | Cuthona yamasui | Not Available |
Yellow-tipped Phyllodesmium Nudibranch (7 videos) | Phyllodesmium briareum | Not Available |