Bottlenose whales, also called bottlies are toothless toothed whales: they live off of plankton and smaller marine animals, particularly cuttlefish. Besides the lack of teeth, they have all the normal characteristics of dolphins, which are called toothed whales. The 'hump' on its head contains spermaceti, a whitish waxy substance. The exact function of this spermaceti is still a mystery.
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