![]() ![]() Despite decades of research, where these animals go for large periods of the year remains unknown. Migration patterns are poorly understood. Large concentrations are known to occur north of the Northern Mariana Islands and Gulf of Sendai with multiple sightings also reported off Bali, the coast of Taiwan, mainland China and the southern coast of Vietnam. ![]() Population in the mid to lower latitudes of the North Pacific is unclear, especially in coastal waters. High densities have also been reported but not quantified in the western North Pacific around the Sea of Japan. They are also considered "common" (0.20–0.40 individuals per 100 km²) in the eastern Pacific along the coast of British Columbia, Washington and Oregon. Īccording to surveys, the highest densities of killer whales (>0.40 individuals per 100 km²) are found in the northeast Atlantic around the Norwegian coast, Aleutian Islands, the Gulf of Alaska and in the Southern Ocean off the coast of Antarctica. What's clear is that they prefer living at the upper latitudes and coastal pelagic environments. It is very difficult to make more precise distributional estimates due to the following: population density, pod numbers and enormous range. Orcas, or killer whales, are found in all oceans and most of the seas. ![]()
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