This was on page 2 of the Sunday Times (London) on 30 January 2011 with an explanatory graphic along with a photo of a cute seal pup. Their newspaper is behind a paywall so I cannot provide a URL.
Harp Seals have become the first mammals know to have suffered mass mortality as a consequence of climate change with at least 500,000 pups having drowned because of shrinking ice levels.
Warmer waters in the seal’s main birthing areas in the north Atlantic last year prevented ice flows from reaching their normal size and stopped the formation of pack ice, which suppresses waves and offers shelter from wind. It meant that in stormy conditions the pups were either pitched into the sea as the floes were tossed around or washed away by large waves.
I don’t know what to think about this, yet.