Seals do not need culling they are not over populated. If seals and polar bears were left alone the seals would not become over populated so they would not all starve to death. And actually ice is not a hinderence to polar bears they catch seals on the ice or through holes in the ice. And if you read the whole of my last message you should see that i knew you were talking about thinning the human population. And Its you who needs to study nature further thats clear by your theory that if seals were not culled all fish, seals, and polar bears would die out.