Four time-lapse shots (CU, MS, CU, MS) of tentacles pulling food to burrow, pushing waste out of burrow. Five shots of plumed worm building up burrow. Four shots (MS, CU, LS, MS) of plumed worm eating sea lettuce. Time-lapse CU, MS of hairy sea cucumber burying itself in sand. Time-lapse CU of hairy sea cucumber extending feathery tentacles. Time-lapse MS of sea cucumbers and terebellid worms on marsh floor. Three time-lapse shots (CU, MS, TCU) of sea cucumber extending tentacles (filtering food from water) then retracting them. MS of sea cucumber retracting all tentacles quickly (time-lapse?). (407)