Creatures of the polar deep (8 pictures)
Sand-fleas such as Hyperoche capucinus, are common predators swimming in polar waters.
one of the Antartic's ice fish, can withstand temperatures that freeze the blood of all other types of fish
common hydromedusae encountered in Antarctic waters
krill, Thysanoessa raschii, is found in high densities under sea ice in the Arctic and its marginal seas, where it feeds seasonally on algae associated with the sea ice
hunts for zooplankton prey that it will harpoon with a dart attached to the tongue coiled within it. Its yellow stomach reaches out to feed all parts of the body. About 3cm long
Sand fleas (amphipod crustaceans) under nearshore ice in the Beaufort Sea. Ice-associated amphipods are a major food source for Arctic cod, in turn the main prey for ice seals
International Polar Year 2007-08 to collect data
studying both poles found 235 species living in both polar regions despite being 6,800 miles (11,000km) apart