A British open-water swimmer is alive and well thanks to a group of dolphins who protected him from a Great White shark. Adam Walker was swimming off New Zealand when he spotted the shark just below him. But a few minutes later 10 dolphins swam up and surrounded him until the shark left.Those dolphins stayed with him for 40 minutes.  He said they churned up the water so much it was like swimming in a washing machine.  But it worked.  The shark lost interest and swam off.

Ironically, Walker's swim was part of an effort to protect the dolphins. Walker is taking part in an Oceans 7 Mission to raise money for a nonprofit group focused on whale and dolphin conservation. He’s looking to become only the second person ever to complete seven long-distance swims in special sites around the world.

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