Environmental Bio Presentation

Environmental Bio Presentation - Whale Hunting Species and...

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Whale Hunting – Species and Events Species Whales are a group of mammals belonging to the order Cetacea , which includes all whale species and various porpoises and dolphins. Even though whales are marine animals with fins, they are not fish, but mammals, since they are warm-blooded, breathe oxygen from the air and not water and give birth to live young. Whales are some of the largest and heaviest known animals, and a large part of their mass is accountable to a thick layer of blubber. This fatty layer serves to keep the body warm, acts as a food reserve and gives the whale its streamlined figure. The streamlining of a whale’s body is appropriate for marine life and is only broken by means for propulsion. There is a pair of flippers behind the head, a pair of flukes on the tail and many whales have a fin on their back. The order of whales is divided into two groups; the suborder Mysticeti , which are the whalebone or baleen whales and the suborder Odontoceti , which are the toothed whales. Most true whales are baleen whales, which use large plates of baleen to sieve small marine animals from the water for food. The baleen whales have been the most sought after whales by hunters, with the exception of the sperm whale. Toothed whales have a jaw of similar, peg-like teeth that are used to capture fish and squid for food. They have a rounded forehead called a melon, which is filled with valuable oil that can be used as a lubricant. Toothed whales include the sperm whale, the killer whale and the narwhal, among others. The gray whale is a member of the baleen whales and lives in the East and West Pacific.
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This note was uploaded on 10/13/2009 for the course YIPH ln;ljhdfi taught by Professor Wanger during the Spring '09 term at Heriot-Watt.

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Environmental Bio Presentation - Whale Hunting Species and...

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