If this was discussed before, I apologize for repetition, cuz I don't remember it, lol...
I was just dozing off last night, after having watched The Day After Tomorrow for the umpteenth time (lol), thinking about ice age, melting polar caps, endangered polar bears...POLAR BEARS!
The "escape route", where Ben went to move the island.
Could that be how the freakin' polar bear got there in the first place? Maybe?