With a fearsome grin fit for a movie monster, this viperfish is a real-life predator that lurks in one of the world's most remote locations.
An international team of 31 researchers found this and other strange animals while exploring the Mid-Atlantic Ridge, an underwater mountain range that runs from Iceland to the Azores islands west of Portugal. Over the course of five weeks, the team cataloged a host of exotic worms, colorful corals, unusual sea cucumbers, and weird fish.
Clearly,the viperfish has plenty to eat. Many of the species found on the ridge are rare and had only been discovered in recent years,scientists said.
At least one species found during the survey—a tiny crustacean called a seed shrimp—is thought to be new to science.
"It was like going to a new country," said expedition leader Monty Priede of Britain's University of Aberdeen. The survey was coordinated by the Norway-based MAR-ECO project and the Census of Marine Life program.

A"mutant" crab with three pincers has been picked up off the Cornish coast.
Fisherman Jeff Brown caught the 20cm (7.8in) edible crab three miles off Portreath and realising its rarity, handed it into a Newquay aquarium.
The crab, christened Claudette by the Blue Reef aquarium staff, will be quarantined for several days before going on show.
Manager David Waines said additional fully formed pincers on crabs were "incredibly rare".
'Genetic mutation'
Mr Waines said: "I have only seen this once before. It's obviously some sort of genetic mutation."
He said crabs are capable of re-growing limbs and claws if they are lost or damaged in a fight.
The aquarium believes Claudette's ability to re-generate lost limbs became confused and, rather than replacing a missing set of claws, she grew an extra pair instead.
The edible crab is the largest of the crab species commonly found around England.
It sports black-tipped claws for catching and eating prey.

Sea dragons are some of the most ornately camouflaged creatures on the planet. Adorned with gossamer, leaf-shaped appendages over their entire bodies, they are perfectly outfitted to blend in with the seaweed and kelp formations they live amongst.Endemic to the waters off south and east Australia, leafy and weedy sea dragons are closely related to seahorses and pipefish. Leafies are generally brown to yellow in body color with spectacular olive-tinted appendages. Weedies have less flamboyant projections and are usually reddish in color with yellow spots.Sea dragons have very long, thin snouts; slender trunks covered in bony rings; and thin tails which, unlike their seahorse cousins, cannot be used for gripping. They have small, transparent dorsal and pectoral fins that propel and steer them awkwardly through the water, but they seem quite content to tumble and drift in the current like seaweed. Leafies grow to a length of about 14 inches (35 centimeters), while the slightly larger weedies can grow up to 18 inches (46 centimeters) long.As with sea horses, sea dragon males are responsible for childbearing. But instead of a pouch, like sea horses have, male sea dragons have a spongy brood patch on the underside of the tail where females deposit their bright-pink eggs during mating. The eggs are fertilized during the transfer from the female to the male. The males incubate the eggs and carry them to term, releasing miniature sea dragons into the water after about four to six weeks.Sea dragons survive on tiny crustaceans such as mysids, or sea lice. It is not known if they are preyed upon by other animals. They are, however, frequently taken by divers seeking to keep them as pets. In fact, such takings shrank their numbers so critically by the early 1990s that the Australian government placed a complete protection on both species. Pollution and habitat loss have also hurt their numbers, and they are currently listed as near threatened.