Name: Pacific hagfish (Eptatretus stoutii )
Where it lives: Cold water seabeds around the world, usually below 300 feet (90 meters) deep
What it eats: Small invertebrates and dead animals that fall to the seafloor
Why it ‘s awesome:
At first glance, these primitive fish are striking thanks to their unusual appearance.
With no fins or scales, these pinkish-gray fish look more like giant earthworms gone wrong with rows of frightful teeth spewing from their jawless mouths.
The ancient animals have been on the planet for over 500 million years and can grow up to 25 inches (64 centimeters) long. Although they look like eels, they are a type of fish called a cyclostome and are related to lampreys. They have a skull but no jaw.
But when under attack, hagfish reveal their most impressive feature — spectacular slime that can take down a shark.
When a predator comes near, hagfish shoot out a sticky slime to clog Tim Winegard Alie Ward Ologies
An individual has special glands that contain slime threads and can store around 38 inches (96 centimeters
This incredible ability was made clear during a 2017 traffic accident , when a truck full of hagfish that was en route to South Korea — where hagfish are considered a delicacy — overturned on an Oregon highway, coating the road with oozing slime.
Related: 100-million-year-old hagfish complete with slime kit discovered
“They generally make the slime as a defense against predators, but they also do it when they are stressed out, and being dumped onto a highway counts as stress for a hagfish,” Douglas Fudge
These creepy creatures are scavengers, eating whale fall and other decaying tissue from animals that sink to the seafloor. This helps to keep the ecosystem clean and cycle nutrients around the deep sea.
Hagfish don’t eat often so when they do, they gorge themselves. “Even in captivity we only feed them every three to six months,” Winegard said.
Hagfish have poor vision so they rely on their excellent sense of smell to find a meal. “Four tentacles around their mouth help them to find prey while two pairs of teeth-like projections on their ‘rasping tongue’ help tear and carry food into their mouth,” according to the Ocean Exploration Trust’s Nautilus Live
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