Toothed whale melon consists of fat, and the skull of any such creature containing a melon will have a large depression. The melon size varies between species, the bigger it is, the more dependent they are on it. A beaked whale, for example, has a small bulge sitting on top of its skull, whereas a sperm whale's head is filled mainly with the melon. Bottlenose dolphins have been found to have signature whistles unique to a specific individual. These whistles are used for dolphins to communicate with one another by identifying an individual. It can be seen as the dolphin equivalent of
Subsistence hunting of the bowhead whale say that one cannot live without the other. According to the Iñupiat, the whale is the center of their diet, culture, and spirit. This makes them dependent on the complex system of sharing and celebrating the whale, and leads them to pray to any killed bowhead whale in thanks for the life it has given to them. For the Iñupiat, subsistence hunting and fishing are important and viable economic strategies, which provide food and raw materials for the whole group. When hunters bring whales back to the community, about 65–70 people drag the whale onto the ice, where they work