Two species of small, deep-dwelling fish called pearlsides possess eye cells that break the rules of vertebrate vision, combining features of rods and cones into a single hybrid photoreceptor never ...

At first glance, the blobfish, also known as a flathead sculpin (Psychrolutes phrictus), looks like a pinkish, gelatinous blob with a droopy mouth and a sagging nose. It looks even worse when it is ...