"I couldn't get a good shot - just fish silhouettes," said Dr Karen Osborn from the Smithsonian Institution. Her detailed study of the animal's "ultra-black" skin revealed that it traps light.

Ateam of marine biologists has discovered 16 species of "ultra-black" fish that absorb more than ... in the deep sea as barely more than faint silhouettes. But interestingly, this unique ...