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sea slug

a nudibranch.
Origin of sea slug
First recorded in 1770-80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for sea slug
Historical Examples
  • Bêche-de-mer or "Trepang" is a kind of sea slug, and is found on the reefs in a few feet of water.

  • Captain King assures us that two hundred vessels annually leave Madagascar to fish for the sea slug, as it is sometimes called.

    The Ocean World: Louis Figuier
British Dictionary definitions for sea slug

sea slug

any of various shell-less marine gastropod molluscs, esp those of the order Nudibranchia See nudibranch
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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sea slug in Science
sea slug  
Any of various colorful marine gastropods of the suborder Nudibranchia, lacking a shell and gills but having fringelike projections that serve as respiratory organs. Also called nudibranch.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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