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Offshore orcas, first described in 1979, are primarily found more than 10 miles (16 km) from shore. Just over 280 offshore orcas are known from the Eastern North Pacific, primarily occurring off the coast of British Columbia.
Although resident orcas have never been observed to eat other marine mammals, they occasionally harass and kill porpoises and seals for no apparent reason. [105] Some dolphins recognize resident orcas as harmless and remain in the same area. [106] Orcas do consume seabirds but are more likely to kill and leave them uneaten.
Offshore: A third population of orcas in the northeast Pacific was discovered in 1988, when a humpback whale researcher observed them in open water. As their name suggests, they travel far from shore and feed primarily on schooling fish . [ 25 ]
Offshore orcas feed on sharks and larger fish in deeper water still, rarely, if ever, coming close to the shore. The researchers collected examples and evidence of killer whales traveling even ...
Offshore wind developers are taking steps required by regulators, but also are voluntarily adopting measures to ensure marine mammals are not harmed. Ørsted won't drive piles between Dec. 1 and ...
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.
Drone videos of gray whales off Oregon have revealed new details about how the marine mammals find food. The findings were described in studies this summer.
Southern resident orcas. In terms of cetaceans, both toothed and baleen whales inhabit the coastal waters of the Salish Sea and the offshore waters of Washington and British Columbia. Of these, the orca is the most famous, with humpback whales and gray whales also well known in the area. Most cetaceans, however, are usually seen in the area ...