These deep-sea monsters, many people will not see in their lifetime! European-style barramundi black-horned catfish Ice Sea Angel Naked Sea Butterfly Predatory Sea Squirt (Megalodicopia hians) Great Foot Worm Devours Eel Ray Eel Deep Sea DragonFish

Euclidean barramundi, also known as Euclidean swordfish shark, Euclidean barramundi, swordnose shark, is the only species in the family Barramundae, is a deep-sea shark. They were first discovered in the waters of Japan. This shark generally lives in the sea hundreds of meters deep and is not easy to catch.

Juveniles and adults live in the middle and deep seas or at the bottom of the deep sea, with distribution depths ranging from 250 m to possible depths of 3000 m. Females of the same species can be about 4 to 5 times larger than males. Males do not live parasitically.

The naked sea butterfly is a sea angel that lives in the Arctic and Antarctic Oceans at a depth of 350 meters. It is neither jellyfish nor fireflies, and its overall length is about two to three centimeters, making it an upland mollusk. Hermaphrodite, living under the ice in cold seas such as the Arctic and Antarctica. Transparent throughout, it is also known as "sea angel", "ice spirit", "ice sea elf" and so on.

Fixed at the bottom of the sea, something swims in and eats it... Same as the piranha in Super Mario. Notice the hole in the top of the head, which is its outlet hole, and the anus grows inside.

The Great King's Footworm, also known as the giant deep-sea lice and giant isopods, is the largest animal kingdom in the world, arthropod phylum, isopoda, and floating lice. It is thought that the Great King's Footworm lives in large numbers in the icy deep atlantic ocean. Adult king footworms can reach a length of 19-37 cm, such a huge size is rare in deep-sea animals.

One can only grow up to 30 inches (75 cm) in a habitat range: worldwide. Habitat depth: up to 5,000–6,000 ft (1,524–1,829 m)

The wire eel is a deep-sea creature that lives about 400 meters below the ocean. With luminous functions such as a large mouth, a retractable stomach, and a nearly transparent appearance, these are the deep-sea survival methods that line eels have evolved.

The deep-sea Arowana belongs to the order Megalodon, a vicious predator. It has a large head with a large number of long, pointed fangs, and it has a luminous bait that grows in the jaw. It constantly flashes and swings back and forth to lure the prey, and when the prey is near, it bites with its sharp teeth. There are also two rows of luminars flanked by the body of the deep-sea arowana, which can signal to other giant-mouthed fish during mating, or they can mimic the sparkling waves that shoot in from the surface of the sea, thereby misleading predatory fish from the depths below.