No One Is Prepared For Hagfish Slime
At first glance, the hagfish—a sinuous, tubular animal with pink-grey skin and a paddle-shaped tail—looks very much like an eel. Hagfish produce slime the way humans produce opinions—readily, swiftly, defensively, and prodigiously. Typically, a hagfish will release less than a teaspoon of gunk from the 100 or so slime glands that line its flanks. But try to lift your hand out, and it’s as if the bucket’s contents are now attached to you.
Source: www.theatlantic.com