Vampire squid

The vampire squid, known to scientists as Vampyroteuthis infernalis,It is very gelatinous in form, resembling a jellyfish more than the common squid. The vampire squid has the largest eyes of any animal. It is a small animal, growing to a length of about six inches, bit it has globular eyeballs as large as the eyes of a large dog. The vampire squid's body is covered with light-producing organs called photophores. When the photophores are off, the squid is completely invisible in the dark waters where it lives. These squid live as deep as 3000 feet. Unlike other squid and octopi, the vampire squid has no ink sack. The vampire squid's arms are covered with sharp tooth-like spikes.  The squid may use these arms to capture its prey. When threatened, the squid can draw its arms up over itself and form a defensive web that covers its body. It can reach a speed of 2 body lengths per second and can accelerate to this speed in only 5 seconds. If danger is present, it can make several quick turns in an attempt to escape its enemies.

Long-nosed Chimaera

Biologists have gone to great lengths to describe the long-nosed chimaera, Harriotta raleighana, whose kind can reach five feet in length. Its stiletto-like nose reminded one of "the nose contour of a supersonic jet aircraft." Others have dubbed it "rattail," for obvious reasons. In South Africa, it is known as the "ghost shark," though it is only distantly related to sharks. A touch of the venomous spine on the first dorsal fin can kill a person, though such a fate is unlikely given the 8,000-foot depths at which this creature lives.

Coffinfish

The coffinfish (B.melanostomus) has a flabby body and long tail that are both covered with small spines. It has a black mouth lining and an illicium (glossary) on the snout that can be lowered into a groove. This species grows to at least 10cm in length. B.melanostomus has been trawled in the Central to Eastern Indian Ocean at depths ranging from 1320m to 1760m. There are two genera in the family Chaunacidae; Bathychaunax and Chaunax. Bathychaunax differs from Chaunax by having a lower lateral line count, longer ilicium, a wider head, more widely spaced body spines and several skeletal characters.