<P> There are 19 generally recognized , discrete subpopulations , though polar bears are thought to exist only in low densities in the area of the Arctic Basin . The subpopulations display seasonal fidelity to particular areas , but DNA studies show that they are not reproductively isolated . The thirteen North American subpopulations range from the Beaufort Sea south to Hudson Bay and east to Baffin Bay in western Greenland and account for about 54 % of the global population . </P>
where are the largest number of polar bears found
Beaufort Sea Hudson Bay Baffin Bay Greenland