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A view of the ventral keel and genital area of a female humpback whale. The two mammary slits are visible on either side of the genital slit. Ha’apai, Tonga
Humpback whales are known for their magical songs, which travel for great distances through the world's oceans. These sequences of moans, howls, cries, and other noises are quite complex and often continue for hours on end. Humpbacks are powerful swimmers, and they use their massive tail fin, called a fluke, to propel themselves through the water and sometimes completely out of it.