Shell-less marine mollusc

Wiktionary Word definitions in Wiktionary
n. Any of several marine opisthobranch gastropod mollusks of the (taxlink Nudibranchia clade noshow=1)

Wikipedia Word definitions in Wikipedia
Sea slug is a common name for some marine invertebrates that more or less resemble terrestrial slugs . Most creatures known as sea slugs are actually snails, i.e. they are sea snails (marine gastropod mollusks ) that over evolutionary time have lost their ...

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Trepang \Tre*pang"\, n. [Malay tr[=i]pang.] (Zo["o]l.) Any one of several species of large holothurians, some of which are dried and extensively used as food in China; -- called also b[^e]che de mer , sea cucumber , and sea slug . [Written also tripang ...

WordNet Word definitions in WordNet
n. any of various marine gastropods of the suborder Nudibranchia having a shell-less and often beautifully colored body [syn: nudibranch ]