Assertion: crustacean's head | /r/CapableOf | stick out to filter plankton
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Source sentences:
text: Lancelet (Cephalochrodata): tiny and transparent; fishlike in appearance; adult form retains dorsal nerve cord, notochord, and gill slits; lives half-buried in the sand, with head sticking out to filter plankton; has sexual reproduction (via separate sexes).