But some fish that live in the ocean ... from sea crop circles to bioluminescence and more. Being able to glow in the dark isn't the only trick swell sharks have up their sleeve.

In New Orleans, a Loyola University professor has been creating original art out of glow-in-the-dark fish gut bacteria, enough to fill 1000 Petri dishes. Her first major foray into art was ...

They're tiny, blobby, butt-shaped, and glow in the dark. What the heck are they? Scientists are still figuring them out.

Researchers have since created glow-in-the-dark fish, cats, and other animals. Image source: Ingrid Moen, Charlotte Jevne, Jian Wang, Karl-Henning Kalland, Martha Chekenya, Lars A Akslen ...