Description Made famous for its appearance as the avenging albino leviathon in Moby Dick, the Sperm whale is indeed an imposing creature: it is the largest toothed carnivore on the planet, reaching up to 60 feet long and 63 tons, with males typically being one and a half times the size of females. This species name comes from its spermiceti organ, located in its strikingly large head, which contains an oily substance (spermiceti) that dries waxy and white and was historically sought after as a fuel source. Another unique feature of this species is its use of echolocation to find and hunt food. It has one row of teeth, only on the bottom jaw, an arrangement which could help it grasp its slippery prey, such as the giant squid. Sperm whales can be found in all the worlds oceans and at all latitudes, prefering deep waters of 200 meters or more. They have been hunted until only recently and are currently listed as threatened, with a population of about a million.