Ключевые слова: animal, annelid, annelids, aquatic, arctic, background, benthos, biology, blood, caulerpa sertularioides, chaetae, clam, clam worm, closeup, coast, crawling, education, enteromorpha sp, exotic, feed, fireworm, inhabitant, kara, legs, marine, maritime, movement, nature, nereis, ocean, paraphyletic, parapodia, parapodium, polychaete, polychaetes, reef, respiratory, sand worm, science, sea, segmented, setae, shrimp, shrimp pellet feed, tentacle, underwater, water, worm, worms, zoology,