The ocean is a place where much is left to be discovered.
Of the thousands of fish species known to make up the deep blue sea, many are beautiful, while others are not as nice to behold.
Many of the ocean's creepiest creatures live deep below the surface, yet just a picture alone can be enough to give you the shivers.
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Here is a roundup of a few of the ocean's most frightening creatures that have been discovered thus far by researchers.
Sea pigs can be found on the ocean floor; these crawl on little legs looking through the muddy seafloor for something to eat.
The sea pig's scientific name is the scotoplane. The creature is quite tiny, ranging from just 1.5 to 6 inches in length.
Researchers have seen these small creatures in the hundreds moving about the sea floor.
The goblin shark, or mitsukurina owstoni, looks very prehistoric.
This shark can be found deep in the ocean with its extremely long nose, small eyes and jagged teeth.
This rare species normally has a pinkish or purplish gray color.
If you take a quick glance at this photo, you may think you are looking at a reef in the ocean, but give it a closer look, and you will see the stonefish take shape.
The stonefish, or synanceia, is a master of camouflage and often hides itself in coral and rocky reefs.
This technique helps it sneak up on prey without moving much at all. The stonefish remains very still in its position and then ambushes its prey when it swims close.
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This fish is the most venomous in the world and can be extremely dangerous to humans.
It has 13 spines that release venom that can kill a human in mere hours.
You may have never seen a giant isopod, but you have probably seen a roly-poly, which will give you a good idea of what the ocean creature looks like, since the two are related.
The bathynomus giganteus has seven pairs of legs and moves slow deep in the ocean.
It snacks on falling debris and can grow to be up to 16 inches.
The fang-like teeth on a Sloane's viperfish make the creature rather terrifying.
The chauliodus sloani, if using its scientific name, has teeth that are more than half the size of its whole head.
This creature is typically found in a darker silver/blue color.
The anglerfish is actually a real creature of the deep, not just an animated monster from "Finding Nemo."
In the movie, Marlin and Dory are drawn in by the anglerfish's glow at the end of the rod coming out of its head before they are chased through the ocean by the scary fish.
This depiction is pretty similar to what an anglerfish does in the ocean.
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The anglerfish, or lophiiformes, is usually a blackish color and can grow to be around 4 feet.
They do have a rod that emerges from their head, kind of like a fishing pole. The end of it glows, which draws in prey.
The frilled shark, or chlamydoselachus sanguineus, has 25 rows and 300 individual razor sharp teeth.
They have eel-like qualities and can grow close to 7 feet in length.
The vampire squid gets its name from the low light, low oxygen environment it lives in deep in the ocean.
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The squid, or vampyroteuthis infernalis, has eight arms, huge eyes and rows of spine on each of its tentacles.
The black swallower, or chiasmodon niger, has a very expandable stomach, allowing it to eat fish that are 10 times its original size.
It typically comes in a brownish, black color and is able to eat fish a lot bigger than itself.
The stargazer lies just beneath the sand.
The fish, also known by its scientific name uranoscopidae, has sharp teeth, venomous spines and large eyes.
