Fellow members of TDPC,
I want to share a photographic opportunity with you.
Natures Photo Adventures, run by David Hemmings, has photo tours to photograph Polar Bear Mother and Cubs at the den.
More information is available at http://www.naturesphotoadventures.com/#!polar-bears-mother-and-cubs-photography-/c5k2
These tours are held at a private lodge where you can legally be near den sites. These tours do not rely on the state of any ice, as you would need in Alaska or Churchill. Check it out, you may be interested.
Note: I am not affiliated with Natures Photo Adventures, but know the good people and my wife Kate and I will be going on one of these tours ourselves.