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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, they are found in diverse marine environments, from Arctic to Antarctic regions to tropical seas.
Northern resident orcas, also known as northern resident killer whales (NRKW), are one of four separate, non-interbreeding communities of the exclusively fish-eating ecotype of orca in the northeast portion of the North Pacific Ocean.
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.
While there are no observations of orcas hunting fin whales, orcas are known to hunt and eat sei whales (Balaenoptera borealis) in waters near Chilean Patagonia. “Sei and fin whales are very ...
In recent years Japan has resumed taking North Pacific fin whale and sei whales in their research whaling. The fin whales are highly desired because they yield arguably the best quality of tail meat (onomi). [14] Japanese research vessels refer to the harvested whale meat as incidental byproducts which have resulted from study.
In 1987, killer whales in Puget Sound donned salmon “hats,” carrying dead fish on their heads. Now, a photo of an orca has observers wondering if the trend has returned.
The herring population is not completely depleted by orcas because they never eat the whole herring ball during the feeding phase of carousel feeding. [2] The herring that are not consumed are able to escape from the orcas. This means the orcas do not completely deplete their food source and potentially the strongest herring will survive the ...
An endangered orca vanished from a dwindling whale pod off the Washington coast, a conservation group said. The missing Southern Resident killer whale, K-26, was not seen by researchers during an ...