Despite annual scientific missions, only 2-5% of the world's oceans have been studied. Therefore, it is not surprising that scientists periodically encounter amazing deep-sea creatures that inhabit this amazing underwater world. 
Some of them look so frightening that you involuntarily want to run away and never see them again. However, in most cases, these creatures are absolutely harmless, and their appearance is just a natural consequence of living at great depths. Therefore, you should not be afraid of them. Get to know them better and think that perhaps they are beautiful after all to some extent.
Octopus hell vampire 
This amazing mollusk lives at depths where there is virtually no oxygen. The octopus got its unusual name from the membranes connecting the tentacles. While swimming, they flutter, strongly reminiscent of a cape. Adult specimens of “vampires” boast ear-shaped fins. The entire body of the creature is covered with special luminescent organs - photophores. Thanks to them, the octopus can create flashes of light that allow it to disorient its enemies.
Ghost fish or chimera 
The incredibly rare ghost fish belongs to the Nosed Chimera family. It lives at a depth of up to 2600 meters, so it is almost impossible to track it down. Over many years of research, scientists have learned that she has special nerve endings on her nose, with the help of which she tracks down prey. The chimera also boasts a poisonous thorn, which serves as a defense weapon.
Frilled or frilled shark 
The frilled shark is an interesting fish that, according to scientists, has not changed a bit in millions of years. The predator prefers to lead a bottom-dwelling lifestyle. The shark can be found at depths from 400 to 1500 meters. It feeds mainly on mollusks, bony fish and crustaceans. The fish got its name due to the presence of numerous sweet spots on its body.
Lizardfish or bathysaurus ferox 
The creepy super-predator has the body of an eel, the head of a lizard and a lot of sharp teeth. A strange creature lives at a depth of 1000 to 2500 meters.
Largemouth or galper eel 
Bigmouth bears little resemblance to the creature living on planet Earth. It belongs to the subspecies of ray-finned fish. Its main feature is the ability to greatly inflate its huge head on a long, serpentine body. This allows it to successfully swallow prey that is several times its size. The ocean monster lives at a depth of up to 3 kilometers.
Giant isopod 
Deep-sea giant crustaceans can grow up to 50 centimeters in length. The weight of some individuals can reach up to 2 kilograms. They are scavengers.
Octopus Dumbo 
Dumbo fin octopuses are recognized as the deepest-dwelling octopuses on the planet. They can be found at depths of up to 5000 meters. This feature seriously complicates the study of these cephalopods in their natural habitat.
Red spiny crab 
The shell of the spiny crab reaches 14 centimeters in width. The spines on it are very dense and sharp. The crab's diet mainly consists of small mollusks.
Red Spadefish 
The spadefish has attracted the attention of scientists with its ability to move along the seabed. The fish does not swim, but literally walks on its fins. The creature is slow, so it does not hunt, like most predatory fish. Nature has awarded the lazy fish with a special fishing rod, which is located on the dorsal fin. Thanks to him, the shovel fish provides itself with food.
Tripod fish
Tripod fish live near the bottom, at depths from 800 to 5000 meters. The main feature of the creature is its amazing fin-rays growing from the pectoral fins and tail. The fish rests on them when it “stands” at the bottom. While swimming, the fish simply relaxes its fins so that they do not interfere with it.
Largemouth shark 
One of the three species of sharks known to science that feed on plankton (besides the whale and basking shark). It does not pose a danger to humans and almost never comes into contact with them in their natural habitat.
Crookshanks 
The stomach of a crockpot swallower that has swallowed large prey can stretch several times, while its heart is strongly displaced to the side. However, this does not affect the life of the fish in any way.
Smallmouth macropinna or barrel eye 
Macropinna is a fish with a transparent head. Through it you can see two large green cylindrical eyes. And those things that at first glance can be mistaken for eyes are olfactory capsules.
European anglerfish or monkfish 
Monkfish is one of the most voracious fish. A hungry anglerfish may even swallow a bird. However, this phenomenon occurs extremely rarely.
Moon fish 
One of the largest bony fish in the world. In addition, it completely lacks scales, and its teeth are fused into a kind of “beak”. Despite its impressive size, the moon fish does not pose any danger to humans.
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