Aquatic invertebrate of the phylum Bryozoa (“moss animals”), members (called zooids) of which form colonies. Each zooid is a complete and fully organized animal. Species range in size from a one-zooid “colony” small enough (less than 0.04 in., or 1 mm, long) to live between sand particles to colonies that hang in clumps or chains as much as a 1.6 ft (0.5 m) across. The texture of colonies varies from soft and gelatinous to hard with calcium-containing skeletons. Freshwater bryozoans attach primarily to leaves, stems, and tree roots in shallow water. Marine bryozoans have a wide range of habitats, from coastal areas to great ocean depths, but are most common just below the tidemarks. Bryozoans feed by capturing plankton with their tentacles.
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Scientists look for ocean intruders [Corrected 08/ 01/ 07] ; Researchers spend three days on the Maine coast collecting and examining marine specimens.
Jul 31, 2007; ANN S. KIM Staff Writer Portland Press Herald (Maine) 07-31-2007 Scientists look for ocean intruders [Corrected 08/01/07] ;...