Researchers find 20,000-year-old refugium for orcas in the northern Pacific

PHYSorg
Aug 21, 2023, 8:04 pm180 pts
The northern Pacific near Japan and Russia is home for several different groups of orcas. They have no contact with each other, do not seek the same food, do not speak the same dialect, and do not mate with each other. How can this be when they live so close to each other and belong to the same species?

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