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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 southern resident orcas form a closed society with no emigration or dispersal of individuals, and no gene flow with other orca populations. [1]
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Tahlequah (born c. 1998), also known as J35, is an orca of the southern resident community in the northeastern Pacific Ocean. She has given birth to four known offspring, a male (Notch) in 2010, a female (Tali) in 2018, another male (Phoenix) in 2020, and an unnamed female calf in 2024.
In late 2005, the southern resident orcas were placed on the U.S. Endangered Species list. Orcas are not usually a threat to humans, and no fatal attack has ever been documented in their natural habitat. There have been cases of captive orcas killing or injuring their handlers at marine theme parks.
More than 50 years after being captured in the Pacific Ocean and held for decades at the Miami Seaquarium, a plan to return Lolita the Orca to "home waters" to live out the rest of her days was ...
While there is no record of southern resident orcas eating harbor porpoises, at least 78 incidents have been recorded since 1962 involving orcas harassing harbor porpoises, of which 28 resulted in the porpoise's death; it has never been confirmed whether this is the result of competition for food, rough play, or true aggression. [9]
Resident (fish-eating) orcas: The curved dorsal fins are typical of resident females. Resident: These are the most commonly sighted of the three populations in the coastal waters of the northeast Pacific. Residents' diets consist primarily of fish [6] and sometimes squid, and they live in complex and cohesive family groups called pods. [7]
Lolita was member of L Pod of the southern resident orcas, an endangered orca community that lives in the northeast Pacific Ocean. She was a close relative of L25 "Ocean Sun", who is the oldest member of the pod. After Lolita's death, L25 "is the only living whale from the 1960s and 1970s capture era."