Marine life species

Pacific-Antarctic Ridge: This new species of crab was discovered in the South Pacific Ocean and was named Kiwa hirsuta kiwa, after the goddess of shellfish in Polynesian mythology, but has become known as the "yeti crab" because of its hairy appearance. The crab was collected from the Alvin submersible at 2,228 metres depth Photograph: PR

Morlaix, Brittany, France: This brilliant yellow sponge (Cliona celata) was found at 38 meters. This is one of the "boring sponges", which create round holes up to around 5 cm in diameter in limestone and the shells of molluscs, especially oysters Photograph: Yann Fontana /PR

Gulf of Cadiz in the northeast Atlantic: A new species of ghost shrimp (Vulcanocalliax arutyunovi) was collected by researchers from the Captain Arutyunov mud volcano at a depth of 1,324 metres Photograph: Census of Marine Life

A new species of sponge (Haliclona xena). Researchers say that many species discovered had been named more than once. For example, the breadcrumb sponge, which smells like exploded gunpowder, had been given 56 different names since it was first described in 1766 Photograph: Bruno Van Bogaert/PR

Mid-Atlantic Ridge: This new squid species (Promacoteuthis sloani), was collected in 2004 and subsequently named for the Alfred P Sloan foundation, a major supporter of the census research Photograph: PR

Westhinder Bank, Belgium: A marbled crab (Liocarcinus marmoreus). The names of the species are being recorded on the new World Register of Marine Species, which is expected to become a vital resource for researchers Photograph: Hans Hillerwaert/PR