14K views · 274 reactions | The hagfish is a slime-emitting ocean-dweller that's remained unchanged for 300 million years--and it shows. It has a skull (but no spine), velvet smooth skin, and a terrifying pit of a mouth that’s lined with rows of razor-sharp teeth. Crazy Monsters | Smithsonian Channel | Facebook

4.5K views · 181 reactions | Happy Hagfish Day! These slime specialists can fill a bucket with predator-deterring protein strands in mere minutes. Tying themselves into a knot helps slough off extra slime! | Nautilus Live | Facebook