THE song of the gray whale is being heard further north these days. It’s just one part of a massive ecological shift affecting the 2 million square kilometres of the Bering sea, one of the world’s richest fisheries.
In recent decades temperatures have risen by around 3 °C in the northernmost part of the Pacific and in the Bering sea. The warming is driven by fast-rising air temperatures, loss of sea ice and the fact that shallow water over the wide continental shelf can heat up more quickly than the deeper ocean. The result is a unique and far-reaching shift…
