There are estimated to be 40,000 individuals in the Beaufort Sea, 25,000 in Hudson Bay, 18,000 in the Bering Sea and 28,000 in the Canadian High Arctic.
Es werden 40.000 Individuen in der Beaufortsee, 25.000 in der Hudson Bay, 18.000 in der Beringsee und 28.000 in der kanadischen Arktis geschätzt.