Blobfish

Now this one is aptly named because it just looks like a mass of blob when it is out of the water. They live at depths between 600 and 1,200 meters where the pressure is 60 to 120 times as great as at sea level. The flesh of the blobfish is primarily a gelatinous mass with a density slightly less than water; this allows the fish to float above the sea floor without expending energy on swimming. Its relative lack of muscle is not a disadvantage as it primarily swallows edible matter that floats in front of it such as deep-ocean crustaceans.