Vermetidae

Part of speech: noun

Definitions

1. A family of marine gastropods known as turret barnacles, characterized by their elongated, conical shells attached to hard substrates; they are sessile crustaceans often found in coastal waters
2. A taxonomic group comprising barnacles with high, tower-like shells fixed permanently to rocks or other surfaces in marine environments; these filter-feeders are notable for their unique shell shape and attachment method
3. Marine organisms belonging to a family of acorn barnacles distinguished by their vermetid-like, coiled or irregularly shaped shells cemented on solid objects, where they feed by filtering plankton from water currents

Etymology: Latin "vermis" meant "worm," and the family takes its name from the genus "Vermetus", which refers to the tube-like shells these animals build, not the tight spiral of a typical snail. The suffix "-idae" is the standard ending for animal families, taken from Greek patronymic endings meaning "descendants of," so the name roughly means "the worm-like ones." Despite the "turret barnacle" label often given for them, vermetids are not barnacles or crustaceans. They are gastropod molluscs, close relatives of ordinary snails, which cement themselves to rock and grow irregular, worm-shaped tubes. That is why "worm snails" is the more accurate common name.

Synonyms: worm snails, vermetids