A pod of dolphins has learnt to wait in the tide race of the incoming tide in Moray Firth, Scotland, at time of salmon migration. They swim to stay in place in the tide race, which runs around Chanonry Point, and catch salmon as they follow the flow of the tide up the estuary to their spawning grounds. This seems to unique to this group, and passed from generation to generation.

Channel Five: Series, Wild Britain; episode, Britain’s wild rivers.Broadcast on April 01 2020. Online here

Here are a few stills.

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