A few exceptions one can suppose of bears staying on land but that's not their natural habitat in the winter.
There's the whole Internet loaded with research material and summaries in plain English on this subject, and I'm not an expert but I know how to find information and to read about it. Up until about 40 years ago no one was sure where and what the bears did when leaving land except some of the Native People living there.
What was your address living in Churchill? I can tell you mine while I was there.
Again with the "research"? The only who's research is substandard is yours. You keep insisting that Polar Bears only go near or into town in the summer, yet I never said they didn't.
However, your insistence keeps inferring that Polar Bears have NEVER gone into the town in winter. That's where your supposed research fails you, dumbass!