Hagfish, numbering around 76 species, inhabit cold waters globally.
They possess the remarkable ability to endure months without consuming food.
Nutrients can be directly absorbed through their skin.
Despite being referred to as "slime eels," they belong to the class Agnatha, which encompasses jawless fish.
Hagfish feature two rows of keratin tooth-like structures, aiding in burrowing into carcasses.
They can expel slime from their nostrils to prevent choking on it.
Hagfish lack jaws and bones, with their skull being composed of cartilage and devoid of vertebrae.