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Description:
A member of the family of toothed whales, the bottlenosed dolphin may reach
a length of 12 feet and weigh 1,000 pounds. Florida dolphins, however,
are generally smaller, measuring approximately 8.5 feet in length and
weighing up to 575 pounds. Body color is typically light to dark gray
or gray-green dorsally, fading to white ventrally. The body is
streamlined and fusiform in shape. The snout is short and blunt,
the head bulbous. The dorsal fin is falcate in shape. Flukes are
concave and notched in the center.
Habitat:
Bottlenosed dolphins inhabit both inshore and offshore areas.
Offshore, bottlenosed dolphins congregate to form large herds.
Inshore, small groups are more commonly observed.
Range:
In the Atlantic Ocean, bottlenose
dolphins range from Nova Scotia to Patagonia, and from Norway to South
Africa. In the Pacific, they are found from Japan to Australia, the Hawaiian
Islands, and from southern California to Chile.
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Bottlenosed dolphin swimming in the Indian River Lagoon. Photo courtesy of R. Chenowith, Melbourne, FL.
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Pod of traveling dolphins. Photo courtesy S. D. McColloch, Harbor Branch Oceanographic Institution, 01 JAN 98
(NMFS GA32/File #39).
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The Indian River lagoon has a resident
population of bottlenosed dolphins estimated to be between 200 and 400
individuals. This population may at times be augmented by coastal
individuals that utilize the lagoon only at certain times during the year, or
even more sporadically.
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