As mentioned earlier, cachalot dive deeper than what other Walen. It has a large and oddly shaped head, which is a substance that allows so deep draft. This substance is woskowata called spermaceti or olbrotem. Is stored on the right channel nosowym, hence, inter alia, these strange shapes of the head. Spermaceti in any part responsible for the regulation of force wyporu. Melts at a temperature around 29 degrees C, however, when the whale dive in freezing water, the cold liquid flows through the openings of the chambers and substance wax cools it, causing it zestalenie. This increases the weight of the head, and affects the speed at zanurzaniu.