Dolphins

Dolphins
Sylvia Burke
March 30, 2008











Dolphins
Dolphins be aquatic mammals that are strongly think to porpoises and whales. There are seventeen different genera of Dolphins in which at that place are almost forty different species.
Their sizes vary from 1.2 meters (4 ft) and 40 kilograms (88 lb) (Mauis Dolphin), up to 9.5 m (30 ft) and ten t angiotensin-converting enzymes (the Orca or sea wolf Whale). (Wikipedia 2008) Dolphins are found entirely over the world, for the most recrudesce however, they are found in the shallower waters of the continental shelves, and are carnivores (Meat eaters), eating mostly fish and squid. The family Delphinidae (Heavisides Dolphin) is the largest in the Cetacea, and relatively recent: dolphins evolved about ten million geezerhood ago, during the Miocene.



Dolphins are thought to be amongst the most intelligent of all animals and their often friendly appearance and playful attitude has make them popular in human culture.
Anatomy
Dolphins piddle a contour fusiform (fusiform center having a spindle-like shape that is wide in the middle and tapers at both ends) body, adapted for fast swimming. The poop fin, called the fluke, is used for propulsion, while the pectoral fins together with the entire base section provide directional control. The dorsal fin, in those species that have one, provides stability while swimming.
Behavior
Dolphins are frequently regarded as one of the Earths most intelligent animals, though it is hard to say secure how intelligent dolphins are, as comparisons of species relative intelligence are involved by differences in sensory apparatus, response modes, and nature of cognition. Furthermore, the impediment and expense of doing experimental work with large aquatics means that some tests which could yield...If you want to get a full essay, severalize it on our website: Orderessay



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