The anglerfish is one of the creepiest, nastiest fish I can think of. An animated anglerfish gave me nightmares in Finding Nemo, but the real creature is worse. In this video from the Monterey Bay Aquarium Research Institute, we get a very rare look at a live anglerfish, who seems mostly interested in getting away from the camera. Just look at that horrible thing. Look at those gross jaws, those dead eyes. And listen to the narration, explaining the anglerfish's horror-movie lifestyle. Okay, roll the ugliness:

Now that you've watched that, check out The Horrors of Anglerfish Mating...if you dare.