>>don't be so pessimistic on polar bears, a new study shows that there are more ploar bears than ever; you know they swim around in the open ocean jumping on ice floating around, hunting seals<<

Actually, only one of the subpopulations is increasing- "Reviewing the latest information available the PBSG concluded that 1 of 19 subpopulations is currently increasing, 3 are stable and 8 are declining. For the remaining 7 subpopulations available data were insufficient to provide an assessment of current trend."

http://pbsg.npolar.no/en/meetings/press-releases/15-Copenhagen.html

This is worse than in 2005, when the best data available then showed 2 increasing, 5 stable, and 5 declining.

http://pbsg.npolar.no/en/status/status-table.html

And the sea ice they need to hunt is in a long term decline:

http://www.arctic.noaa.gov/images/polarbear/schliebe_03.gif

Don't remember where I saw it, but the average distance polar bears have to swim to get back to land after hunting season has increased from ~50 to ~200 miles. Many of the babies simply don't make it.