Ключевые слова: animal, annelid, annelida, annelids, aquatic, background, benthos, biology, blood, chaetae, clam, clam worm, closeup, crawling, education, feed, fireworm, fishing, inhabitant, legs, marine, marine polychaete annelid, movement, mullet fish, nereididae, nereis, nymph, ocean, paraphyletic, parapodia, parapodium, polychaeta, polychaete, polychaetes, prawn, reef, respiratory, sandworm, science, sea, segmented, segmented worms, setae, shrimp, shrimp pellet feed, study, underwater, vermin, worm, zoology,