The head of the sperm whale makes up more than one-third of its total body mass. Approximately 90% of its weight is accounted for by the spermaceti organ, which contains up to 4 tons of spermaceti oil – a fatty mixture that, at normal temperatures…3 photos

37°C is the temperature at which it remains liquid, but it crystallizes upon reaching 31°C. In search of food, these animals dive to depths of up to 3000 meters. In order to maintain optimal buoyancy at such great depths, the sperm whale’s density must be exactly equal to that of the surrounding water. When it dives deeply, the temperature of the spermacet oil decreases, causing it to solidify and become denser.
As a result, the whale’s buoyancy changes in accordance with the density of the seawater. This demonstrates an amazing anatomical and biochemical adaptation in the sperm whale. Unfortunately, due to the commercial value of spermacet oil, sperm whales are currently listed among endangered species.