This video from National Geographic will make any self-respecting maritime predator think twice before attacking a hagfish, an eel-like creature that secretes slime from its pores. Also, fair warning, you may not want to watch this with food in your mouth. (Click the image below to watch the video on the NatGeo site.)
And there you have it. Try to eat a hagfish; get a mouthful of slime. EVERY TIME. The hagfish is the honey badger of the ocean. Also, aren’t those teeth gross? So gross.
Attacking Shark Gagged by Slime, National Geographic.