If you think the biggest underwater threat is a shark or other large predator, think again. A video uploaded by a Utah-based boating store shows the true terror of the deep is a small yellow fish with a taste for nipples.
The footage shows the fish carefully sizing up its prey, rearing back, and then launching its body out of the water to grasp the victim's chest. Worse, the fish seems to hang on for at least a second as the man struggles to knock it away.
Not seen in the video: the Jaws theme music that was totally playing in the fish's head as it readied for the attack.