The Dudgeon walking shark is only the 10th known species of this kind of unusual fish.

It sounds like a scene out of a horror movie: a shark that can walk. In reality, walking sharks “are the cutest sharks that you’ll ever see,” says marine scientist Jessica-Ann Blakeway.

So imagine her thrill when she and her team came upon a walking shark with unusual markings while diving at night on a reef in Milne Bay, Papua New Guinea. This one had “little white dashes along its body and lots of smaller brown dots,” Blakeway says, not the leopard-like spots of the other walking sharks they’d been surveying.