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The orca (Orcinus orca), or killer whale, is a toothed whale and the largest member of the oceanic dolphin family. It is the only extant species in the genus Orcinus and is recognizable by its black-and-white patterned body. A cosmopolitan species, it is found in diverse marine environments, from Arctic to Antarctic regions to tropical seas.
The first episode, Giant Lives, focuses on humpback whales and blue whales, [2] The second, Deep Thinkers, explores the cognitive abilities of dolphins. The third and final episode, Voices of the Sea, investigates the vocalizations of dolphins and whales. The series was released on DVD and Blu-ray on 6 March 2012 by BBC Home Entertainment, but ...
Orcinus is a genus of Delphinidae, the family of carnivorous marine mammals known as dolphins. It includes the largest delphinid species, Orcinus orca , known as the orca or killer whale. Two extinct species are recognised, Orcinus paleorca and O. citoniensis , describing fossilised remains of the genus. [ 2 ]
Orcas, or “killer whales,” can grow up to 27 feet long and weigh as much as six tons. Known as the ocean’s top predator, they’re extremely intelligent, with their own languages of clicks ...
Approving two proposed killer whale species could transform how they're conserved. It would also turn a new page in one of the strangest chapters in marine mammal history.
The sei whale, or Rudolph's whale (Balaenoptera borealis), lives mainly in the North Atlantic and avoids enclosed seas, [22] but occasionally makes occasional incursions into the Mediterranean, although this is considered exceptional [12] and restricted to Spain and France. [14] The sei whale is classified as "endangered" on the IUCN Red List. [23]
The monodontids, oceanic dolphins (Delphinidae) and porpoises (Phocoenidae) together comprise the Delphinoidea superfamily. Genetic evidence suggests the porpoises are more closely related to the white whales, and these two families constitute a separate clade which diverged from the Delphinidae within the past 11 million years.
“Killer whales are very physical,” he said, “and because they’re 25 feet long and weigh up to 8,000 pounds, when they are physical with an object, it can be a little bit more forceful.” ...