Barents Sea

This part of the Barents Sea opens toward the northern coasts of Norway and Russia, where Atlantic and Arctic conditions overlap. Warm water from the North Atlantic drift reaches the southern sea and prevents year-round ice around its ports. Farther north, the influence of the Atlantic weakens and the marine environment becomes more severe. Animals and people alike must follow the shifting edge between open water, seasonal ice and exposed channels.

Biological production begins early near melting ice. Fresh water forms a stable surface layer, allowing sunlight to support phytoplankton in the spring. That bloom feeds Calanus copepods and krill, which in turn sustain young cod, capelin, polar cod, whales and little auks. Within this food web, capelin acts as a key link to northeast Arctic cod, harp seals and seabirds such as common and Brünnich's guillemots. Short, intense bursts of production support species across a vast northern range.

For coastal communities, the living sea is both a route and a account of food. Seasonal ice, strong winds and low temperatures require specialized boats and local knowledge, while the southern approaches remain usable through winter. The sea edge therefore works as a changing frontier, where Atlantic warmth enters the Arctic and marine life gathers around the most productive waters.