The sea urchin looks like a land cactus in the water, covered in spikes, and it takes a special kind of head to be able to eat it alive directly. The wolf eel is one of those animals that can eat sea urchins raw, but it's just a little weird looking.

The wolf eel is one of the animals with the hardest mouths in the sea, and it can eat cactus against a camel, and in the face of sea urchins full of spikes, the wolf eel can chew them raw, and its mouth is surprisingly hard. Its most notable feature is this oddly large head, probably because all its energy is spent on growing its head, resulting in a smaller carapace that looks like only its head.

Because of this strange shape, people gave it an affectionate name -- "the sea monster". Although it looks ugly, but they are very good character, hiding in the daytime in the sea level of about 200 meters in the deep sea reef, wait until the night will come out to feed, the main food are sea urchins, crabs, and shells and other hard-shelled creatures, widely distributed in the Pacific Ocean waters. As adults, wolf eels can reach a length of about 1 to 2 meters and weigh about 19 kilograms.

They are covered in dark brown markings and have a large, square head with two rows of unusually sharp teeth above and below the mouth. The front incisors, in particular, were able to grow to about three centimeters, giving them an overall look like mutated sea monsters that had been exposed to nuclear radiation.

The huge head, coupled with two rows of sharp incisors and powerful jaws, allows them to easily smash animals with hard armor. Thick lips at the top and bottom protect them from the sea urchin's insistent injuries as they feed. Behind the incisors are molars with an even stronger bite.

In the deep sea, wolf eels are particularly fond of crabs, sea urchins and other hard-shelled animals, even octopus and other mollusks are also on its menu, as long as the chewing wolf eels will eat.

And its huge head gives it a snake-like ability: when the head is separated from the body, it retains the ability to bite. A fisherman once caught a wolf eel and, after cutting off its head, was still attacked with a severed head. This feels especially like a sea monster that has mutated into a spirit. Combined with its horrifying appearance, it was easy to assume that it was a product of nuclear radiation mutation.

The ferocious appearance did scare off many people, but for humans, they were a friendly bunch of friends.