"The individuals of the bryozoan colony, called zooids, are about one-sixteenth of an inch in length and consist of little more than a digestive system encased within a compartment of leathery or calcified skeleton. The zooids feed through a trapdoor that opens to the outside. By thrusting feathery tentacles into the current, they sweep tiny plants and animals into their open mouths with a quick, flicking motion." (Winston 1990:70)
Life in Antarctic depths. (Cover story)Natural History Magazine, Inc.
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