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NATURE: How Orcas Hunt Dolphins

Orcas swim thousands of miles to intercept the sardine run, but it's not the sardines they're after. They arrive to hunt dolphins, allowing sardines to swim away from their initial predators.

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Orcas swim thousands of miles to intercept the sardine run, but it's not the sardines they're after. They arrive to hunt dolphins, allowing sardines to swim away from their initial predators.

NATURE is a production of The WNET Group for PBS. Throughout its history, Nature has brought the natural world to millions of viewers. The PBS series has been consistently among the most-watched primetime series on public television.

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