Pacific Whale decline...

Over fishing or is it something else? "The Whale starving, their fat has just gone, and there's not a lot of breeding going on," Dr Megill related. "They seem to spend their time looking around for food when they should be breeding"

The cause of this change is not clear. A link with climatic conditions makes sense; warmer waters hold less oxygen, they become less productive, resulting in less of the tiny crustaceans which are the grey whales' favoured food. Source: BBC:: Pacific whale decline 'a mystery'