Whales return in Alaska

Good news.... Blue Whales have appeared off parts of Canada & Alaska for the first time since they were eradicated by commercial whaling activities in the last century.

Scientists are now pondering just why they have re-appeared - one of the possible reasons being the affects of global warming on the krill population (krill being the whale's staple diet). Hopefully it's the other reason - that krill , and hence whale migrations, are affected by long term shifts in the pattern of ocean temperatures and that it is these that are bringing the whales northward.