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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 genus Orcinus was published by Leopold Fitzinger in 1860, [4] its type species is the orca named by Linnaeus in 1758 as Delphinus orca.Taxonomic arrangements of delphinids published by workers before and after Fitzinger, such as John Edward Gray as Orca in 1846 and Orca (Gladiator) in 1870, are recognized as synonyms of Orcinus.
The research vessel Noctiluca of the Northwest Fisheries Science Center in close proximity to an orca. The southern resident orcas, also known as the southern resident killer whales (SRKW), are the smallest of four communities of the exclusively fish-eating ecotype of orca in the northeast Pacific Ocean.
The pygmy killer whale (Feresa attenuata) is a poorly known and rarely seen oceanic dolphin. [3] It is the only species in the genus Feresa.It derives its common name from sharing some physical characteristics with the orca, also known as the killer whale.
Tahlequah, the Southern Resident orca who carried her dead calf for 1,000 miles over 17 days in 2018, is mourning the loss of another newborn, raising concerns about her health.
It was smaller than the modern killer whale (O. orca), 4 m (13 ft) versus 7 to 10 m (23 to 33 ft), and had around 8 more teeth in its jaw. It may have resembled the modern killer whale in appearance, and could represent a transitional species between the modern killer whale and other dolphins.
The killer whale pod in Mexico hunts and attacks much larger whale sharks by targeting them from below, a study finds Killer Whales Are Hunting Whale Sharks — the Largest Fish in the World, New ...
The upper value, 5.0, is unusual, even for large fish, [7] though it occurs in apex predators of marine mammals, such as polar bears and killer whales. [8] As a point of contrast, humans have a mean trophic level of about 2.21, about the same as a pig or an anchovy.