Janolus is a genus of small to large sea slugs, or more accurately nudibranchs, marine gastropod mollusks, in the family Janolidae. The name Janolus is derived from the two-headed god Janus, in ancient Roman mythology.
The Polyceridae are a taxonomic family of sea slugs, dorid nudibranchs, marine gastropod mollusks within the superfamily Polyceroidea.
Acanthodoris is a genus of sea slugs, dorid nudibranchs, shell-less marine gastropod mollusks in the family Onchidorididae. The genus is believed to have originated in the Atlantic Ocean in the Cretaceous period and spread to the Pacific Ocean. The relationships of Acanthodoris to the other genera in the family Onchidorididae were evaluated by molecular phylogeny in 2015.
Cuthona is a genus of nudibranch in the family Tergipedidae.
Flabellina is a genus of sea slugs, specifically aeolid nudibranchs. These animals are marine gastropod molluscs in the family Flabellinidae.
Atagema is a genus of sea slugs, specifically dorid nudibranchs. They are marine gastropod molluscs in the family Discodorididae.
Fionoidea is a superfamily of small sea slugs, aeolid nudibranchs. They are gastropod mollusks within the infraorder Cladobranchia. The families within Fionoidea were shown to be monophyletic on DNA evidence and a re-interpretation of family characteristics was provided.
Eubranchus is a genus of aeolid nudibranch in the family Eubranchidae.
Cratena is a genus of sea slugs, aeolid nudibranchs, marine gastropod molluscs in the family Facelinidae.
Discodoris is a genus of sea slugs, dorid nudibranchs, shell-less marine gastropod molluscs in the family Discodorididae.
Joshua Alder was a British cheesemonger and amateur zoologist and malacologist. As such, he specialized in the Tunicata, and in gastropods.
Hermaea is a genus of sacoglossan sea slugs, a shell-less marine opisthobranch gastropod mollusks in the family Hermaeidae.
Phidiana is a genus of sea slugs, aeolid nudibranchs, marine gastropod molluscs in the family Facelinidae.
Tenellia is a genus of sea slugs, aeolid nudibranchs, marine gastropod mollusks in the family Trinchesiidae.
Coryphella is a genus of sea slugs, specifically aeolid nudibranchs, marine gastropod molluscs in the family Coryphellidae.
Diaphoreolis is a genus of sea slugs, aeolid nudibranchs, marine gastropod molluscs in the family Trinchesiidae.
Amphorina is a genus of aeolid nudibranch in the family Eubranchidae.
Buskiidae is a family of bryozoans belonging to the order Ctenostomatida.
Lichenopora is a genus of bryozoans belonging to the family Lichenoporidae.
Mecynoecia is a genus of bryozoans belonging to the family Entalophoridae.
