The Barents Sea, a marginal sea of the Arctic Ocean between Norway and Russia, connected with the Norwegian Sea, the Kara Sea via the Matochkin, Yugorsky and Kara Straits, and the Baltic Sea via the White Sea-Baltic Canal, it features ~ 0-3 t°C, salinity ~ 35 ‰, several sub-seas, mostly ice-free water and high biological production for this latitude. [...]