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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]
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.
The southern resident community alone had lost 48 of its members to captivity; by 1976, only 80 remained. [209] In the Pacific Northwest, the species that had unthinkingly been targeted became a cultural icon within a few decades. [166] The public's growing appreciation also led to growing opposition to whale–keeping in aquarium.
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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]
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"Killer whales can easily travel 25 miles an hour," she said. "To punch a hole in the side of a dolphin and hit it so hard that it's jumping so high out of the water — the force is tremendous."
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.