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The boulders on Antarctica’s shallow seabed play host to a wide variety of filter-feeding, aquatic invertebrates called Bryozoa.

Formerly the group included the Tunicata, Brachiopoda, and sometimes the Bryozoa.

See prehensile processes on the cells of some Bryozoa, often having the shape of a bird's bill.

Bryozoa, brī-ō-zō′a, n.pl. an old name for the Polyzoa, from their resemblance to mosses.

Bryozoa, a group of minute animals which form encrustations on seaweeds and stones, 46.