Biodiversity & Conservation

MarLIN Glossary

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Bryozoa
The Phylum Bryozoa is characterized by sessile colonies made up of many small individuals ca 0.5 mm long called zooids. Each zooid is surrounded by a protective case, which is oval, box-like or tubular in shape. Each zooid bears a bell of ciliated tentacles called the lophophore, which is retracted if disturbed. Colonies have a wide variety of forms, including encrusting sheets or mats, soft fleshy lobes, erect twiggy growths, or bushy tufts (adapted from Ruppert & Barnes (1996) and Hayward et al. (1996)).

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Glossary references