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How much does the job pay? propecia uk results The Svalbard archipelago has one of the largest polar bear populations in the world, with more than 2,000 of these marine mammals. Superb swimmers, they spend the dark winters hunting on the sea ice that wraps its icy grip around the archipelago. In summer the ice retreats and many bears stay on land, often close to coastal waters. With 24-hour daylight , this is the time of year to look for wildlife.