Open-water swimmer Adam Walker was swimming New Zealand's Cook Strait April 22 as part of the Oceans Seven mission when he noticed a fairly unwelcome guest accompanying him on a swim: A great white shark.
Fortunately, someone – or rather, several someones – had his back.
Cook said he was surrounded by a pod of 10 dolphins, who continued swimming with him until the shark – no doubt intimidated by the show of strength – took off. "I'd like to think they were protecting me and guiding me home," Walker wrote on his Facebook. Walker's mission partially benefits Whale and Dolphin Conservation, so maybe the dolphins knew Walker was a friend.