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Oceanic dolphins or Delphinidae are a widely distributed family of dolphins that live in the sea.Close to forty extant species are recognised. They include several big species whose common names contain "whale" rather than "dolphin", such as the Globicephalinae (round-headed whales, which include the false killer whale and pilot whale).
Surface-living animals (such as sea otters) need the opposite, and free-swimming animals living in open waters (such as dolphins) need to be neutrally buoyant in order to be able to swim up and down the water column. Typically, thick and dense bone is found in bottom feeders and low bone density is associated with mammals living in deep water.
Many of these places are more than just dolphinariums; the list includes themeparks, marine mammal parks, zoos or aquariums that may also have more than one species of dolphin. The current status of parks marked with an asterisk (*) is unknown; these parks may have closed down, moved, changed names or no longer house any dolphins. Due to the ...
A common bottlenose dolphin (Tursiops truncatus). A dolphin is an aquatic mammal in the clade Odontoceti (toothed whale).Dolphins belong to the families Delphinidae (the oceanic dolphins), Platanistidae (the Indian river dolphins), Iniidae (the New World river dolphins), Pontoporiidae (the brackish dolphins), and possibly extinct Lipotidae (baiji or Chinese river dolphin).
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Dolphins of the Sea is a bronze sculpture by Katharine Lane Weems, installed outside the New England Aquarium on Boston's Central Wharf, in the U.S. state of Massachusetts. The sculpture depicts a pod of swimming dolphins and measures approximately 4 × 3 × 7 ft. [ 1 ] It was copyrighted in 1977.
Dolphinarium in Harderwijk, the Netherlands, Dutch newsreel from 1966. Though cetaceans have been held in captivity in both North America and Europe by 1860—Boston Aquarial Gardens in 1859 and pairs of beluga whales in Barnum's American Museum in New York City museum— [3] [4] dolphins were first kept for paid entertainment in the Marine Studios dolphinarium founded in 1938 in St. Augustine ...
The family Balaenidae, the right whales, contains two genera and four species. All right whales have no ventral grooves; a distinctive head shape with a strongly arched, narrow rostrum, bowed lower jaw; lower lips that enfold the sides and front of the rostrum; and long, narrow, elastic baleen plates (up to nine times longer than wide) with fine baleen fringes.