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Like the Southern residents, the Northern residents live in groups of matrilines. A typical Northern resident matriline group consists of an elder female, her offspring, and the offspring of her daughters. Both males and female orcas remain within their natal matriline for life. [4] Matrilines have a tendency to split apart over time. [3]
In northern residents, females do most of the herding and hunting of salmon, whereas in southern residents, males do most of the hunting. It has been found that female southern residents do not actively forage when nursing calves, so males must hunt in their place; in northern residents, females continue to hunt even when nursing calves.
Over 2,000 individual resident-like orcas and 130 transient-like orcas have been identified off Russia. [29] At least 195 individual orcas have been cataloged in the eastern tropical Pacific, ranging from Baja California and the Gulf of California in the north to the northwest coast of South America in the south and west towards Hawaii. [ 31 ]
Tracking the Humboldt Current orcas and knowing what the killer whales are hunting and eating will help conservation groups protect the orcas, which are described as “data deficient” by the ...
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Corky II (born c. 1965), often referred to as just Corky, is a female captive orca from the A5 Pod of northern resident orcas. At approximately the age of four, Corky was captured from Pender Harbour off the coast of British Columbia on 11 December 1969. [2] She has lived at SeaWorld San Diego in San Diego, California since 21 January
An orca breaching in Hood Canal. The marine mammals of the Salish Sea are numerous and diverse, both in taxonomy and morphology. A total of six species of pinnipeds, eight species of baleen whales, seventeen species of toothed whales, and one mustelid (the sea otter) inhabiting the local waters of the Salish Sea and the outer coastal waters over the continental shelf off Washington and British ...