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Whales in the polar region are marine mammals known for their immense size and intelligence. They are well adapted to surviving in the frigid temperatures of the Arctic and Antarctic, with thick layers of blubber that insulate them from the cold and help them maintain buoyancy. Whales in this habitat include both toothed and baleen varieties. Toothed whales are characterized by their single blowhole and use echolocation to navigate and find prey. Examples of toothed whales found in polar regions include orcas, also known as killer whales, and narwhals with their distinctive long, spiraled tusks. Baleen whales, on the other hand, have two blowholes and use a comb-like structure called baleen to filter out small fish and krill from the water. Blue whales, the largest animals ever known to have lived on Earth, are one of the many baleen species that can be found in polar regions during certain times of the year. In summary, the "Whale" subcategory under the parent categories of "Animals," "Animals By Habitat," and "Polar" refers to the diverse group of marine mammals that inhabit the polar regions. These majestic creatures display unique adaptations for surviving in extreme cold and contribute significantly to maintaining the delicate balance of life in these fragile ecosystems.