Three mass mortality events have struck a population of gray whales off the west coast of North America since the 1980s, and scientists have linked them to changing conditions in the Arctic.
It strikes me as a very precarious balance that too much sea ice prevents them feeding for half the year, and too little sea ice prevents them from feeding the other half of the year.
It strikes me as a very precarious balance that too much sea ice prevents them feeding for half the year, and too little sea ice prevents them from feeding the other half of the year.