Off the western coast of the United Kingdom, conservationists attached some bait to an underwater camera, dropped the contraption to the seabed and waited. When they eventually watched the footage, it left them stunned.

They’d filmed one of “the world’s rarest shark species.”

A team of researchers set out to investigate “dolphin diets and marine diversity” in Cardigan Bay, Wales, as part of an ongoing, yearslong effort known as the Dolphin Diet Detectives Project, the Wildlife Trust of South and West Wales said in a July 26 news release.

To do this, researchers dropped baited underwater remote video systems into “a range of habitats” at Cardigan Bay, left the cameras “to record for just one hour at each location” and then reviewed the footage, the organization said.

The process was ted

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