Velvet Belly Lanternsharks (Etmopterus spinax) live in the deep sea where they glow in the dark. Their glowing bellies are thought to be used as camouflage, to hide their silhouette when seen from below in the deep sea. Another recent study led by Julien Claes and Jérôme Mallefet from the Catholic University of Louvain in Belgium suggests the sharks illuminate spines on their backs to warn off predators. For the first time, these glowing sharks have been caught on camera by Jérôme Mallefet. The sharks were filmed at the Espeland Marine Station in Norway.