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Whales are mammals that live in the oceans but breathe oxygen from the air, like humans. Despite living in water, they must surface to breathe. As a result, their respiratory systems have evolved into specialized structures adapted to marine life. Breathing Through Their Lungs Whales breathe through lungs, just like other land-dwelling animals. They do not have gills and rely on air to meet their oxygen needs. Location of the Blowholes Whales have nostrils located on the top of their heads. This