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Oceanography Ch 13

The Nektons

TermDefinition
Nekton pelagic animals that are active swimmers; for example, adult squid, fish, and marine mammals
Invertebrate an animal without a backbone
Mammal homeotherms…warm blooded animals that possess hair and give live birth…
Cetacean the order of marine mammals that includes whales, dolphins, and porpoises
Baleen bony material growing down from the upper jaw of plankton-feeding whales; forms a strainer, or filtering organ, consisting of numerous plates with fringed edges
Mystoceti the suborder of cetaceans that includes baleen whales
Odontoceti the suborder of cetaceans that includes the toothed whales
Pinniped member of the marine mammal group that is characterized by four swimming flippers; for example, seals and sea lions
Manatee large herbivorous marine mammal of tropical and subtropical waters; includes the manatee and the dugong
Echolocation use of sound waves by some marine animals to locate and identify underwater objects
Narwhal whale polar odontoceti with one sprial tooth emanating from its mouth
Killer whale fast swimming odontoceti characterized by black and white coloration
Blue whale largest mystoceti
Sperm whale largest odontoceti
Squid member of the class cephalopoda characterized by the posession of 8 short tentacles and 2 long…elongated body
Cuttlefish member of the class cephalopoda characterized by the posession of tentacles and photophores
Nautilus member of the class cephalopoda characterized by the posession of tentacles and hard coiled outer shell
Created by: Permian
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