Glow in the dark sharks
In National Geographic News I report on sharks that glow in the dark. Lantern sharks and pygmy sharks live in the deep sea and have evolved bioluminescence – partly as a form of countershading to hide their silhouettes from beneath and also as a way to communicate with each other in the dark depths. Chatting with one of the study authors I was amazed to hear that male velvet belly lantern sharks have glowing sexual apparatus – all the better for ladies to see them by.
Check out the story and hear what else the authors had to say at Nat Geo.