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Through this, environment plays a large role in the differentiation and evolution of this dolphin species. [87] The divergence and speciation within bottlenose dolphins has been largely due to climate and environmental changes over history. According to research, the divisions within the genus correlate with periods of rapid climate change.
The dusky dolphin (Lagenorhynchus obscurus) is an oceanic dolphin found in coastal waters in the Southern Hemisphere. Its specific epithet is Latin for "dark" or "dim". It is very closely genetically related to the Pacific white-sided dolphin , but current scientific consensus holds they are distinct species.
A researcher fires a biopsy dart at an orca.The dart will remove a small piece of the whale's skin and bounce harmlessly off the animal. Cetology (from Greek κῆτος, kētos, "whale"; and -λογία, -logia) or whalelore (also known as whaleology) is the branch of marine mammal science that studies the approximately eighty species of whales, dolphins, and porpoises in the scientific ...
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).
Dolphins and other smaller cetaceans are sometimes hunted in an activity known as dolphin drive hunting. This is accomplished by driving a pod together with boats, usually into a bay or onto a beach. Their escape is prevented by closing off the route to the ocean with other boats or nets.
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.
The false killer whale is in the family Delphinidae (oceanic dolphins). It is in the subfamily Globicephalinae ; its closest living relatives are Risso's dolphin, the melon-headed whale ( Peponocephala electra ), the pygmy killer whale ( Feresa attenuata ), pilot whales ( Globicephala spp.), and possibly snubfin dolphins ( Orcaella spp.). [ 10 ]
It includes all modern oceanic dolphins, porpoises, and their relatives, such as Lipotidae [2] and Iniidae. [3] [1] [4] [5] Short-beaked common dolphin (Delphinus ...