Despite looking incredibly fearsome, the seawolf is only dangerous when defending itself outside the water. Seawolves live in incredibly cold water (up to -1°C), at depths of 250-400 feet, and have a natural supply of antifreeze to keep their blood moving freely.
Anglerfish – also known as Hell’s fishermen – typically have three long filaments sprouting from the middle of their heads along with large upward-pointing mouths. They can be found worldwide on many different levels of the ocean. Some live in the open water, some dwell on the ocean floor, others in the deep sea, some on the continental shelf, and some in our nightmares.
Stargazers, so called because they have eyes on the tops of their head, are venomous fish found in shallow waters around the world. They bury themselves in the sand and have a worm-shaped lure growing out of their mouth which they use to catch prey passing over head. Those cunning little monsters.
When scientists discovered a fish with unusual fangs made of bone in a Burmese stream early in 2009, they nicknamed it the Dracula fish. Researchers from London's Natural History Museum say that male Dracula fish use their fangs to fight each other - but do not appear to draw blood. What gentlemen.
We bet you can’t guess why the stonefish has its name. Highly venomous and dangerous to humans, stonefish are found in the coastal regions of Indo-Pacific oceans. Stonefish have poisonous spikes at the base of their needle-like dorsal fin spines which stick up when disturbed or threatened – just like a nightmarish undersea hedgehog.
The frilled shark resembles a dark brown or grey eel, with six gill slits, like a shark, on its side. They are very rarely found in shallow water and mainly live at depths of up to 1,500 metres in Norway, South Africa, New Zealand and Chile. Curiously, they resemble the sea serpents and dragons of Asian and European myth.
A viperfish is a deep-water fish which grows to lengths of up to 24 inches long and has long, needle-like teeth and hinged lower jaws. The Viperfish lives at very low ocean depths and is one of the fiercest predators in the sea, luring its prey with a light-producing organ called a Photophore, which is located on the end of its dorsal spine.
As the name suggests, scorpion fish are among the world's most venomous species. They have a sting in the form of sharp spines coated with venomous mucus and are mostly found in tropical Indo-Pacific seas, just waiting for unwary swimmers.
The colossal squid, sometimes called the Antarctic or giant cranch squid, is believed to be the world's largest squid species, and possibly responsible for the legend of the Kraken. The largest known specimen uncovered by man is the 10 metre-long creature caught in 2007 in New Zealand, as seen in the awe-inspiring photo above.
The megamouth shark is an extremely rare and unusual species of deep-water shark. The megamouth lives at a depth of around 120-160 metres in southern hemisphere oceans, where it swims with its mouth constantly open, catching plankton and jellyfish for food like some kind of monstrous hoover.
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