One glow-in-the-dark animal is the swell shark. Swell sharks are shy shark species that aren't dangerous. Swell sharks are bioflourescent, which is why they glow. But that's not the only trick ...

Small-molecule metabolites in sharks’ skin help the creatures stand out against the dark ocean floor by glowing bright green, researchers reported August 8 in iScience. Swell sharks (Cephaloscyllium ...

This shark gets its name from an unusual behavior it displays when threatened by a predator. When threatened, the swell shark swallows vast amounts of seawater, which causes its belly to swell and ...