Angler Fish
The spiky, angry looking angler fish lives in one of the world's most inhospitable environments: the dark wilderness at the bottom of the sea
Coelacanth
Once thought to be extinct, the coelacanth dates back 400 million years and was rediscovered in 1938
Dragon Fish
This deep sea fish is known for its slim body and large, sharp teeth. It is a fearsome predator for its size (about 15cm) and lures prey with a light-producing protrusion attached to its chin
Fangtooths
These frightening-looking fish are found in tropical and cold-temperate waters - but fortunately you are unlikely to come face-to-face with a fangtooth as they can live as deep as 5,000m
Giant Squid
Little is known about the mysterious giant squid, which live deep in the inky depths in the Pacific Ocean. Their mystique is heightened by seaman's legends of huge tentacles reaching up from the ocean bed, and giant suckers tearing at boats. In reality the creatures are thought to grow up to 18m long and weigh up to 900kg
Killer Whales
Powerful killer whales feed on fish, seals, and even sharks. The animals have been known to snatch seals off the ice and drag seabirds to their death
Giant Crabs
Measuring up to 1.5m across and weighing 10kgs, the red king crab can wreak havoc on sea life
Blue-ringed Octopus
Despite being only the size of a golf ball, the blue-ringed octopus can really pack a punch. Its venom is powerful enough to kill a human, and there is no antivenin
Sperm Whales
The sperm whale is the largest species of toothed whale, with adults growing up to 18m long
Stone Fish
The most venomous fish in the world, the stone fish is a master of disguise, blending in perfectly with the sea floor. It doesn't attack, but it is ready if you step on it: the poison can cause paralysis and death
