It is hypothesized that before the whale dives, cold water enters the organ, and it is likely that the blood vessels constrict, reducing blood flow, and, hence, temperature.  These anatomical differences suggest that fossil species may not have necessarily been deep-sea squid eaters such as the modern sperm whale, but that some genera mainly ate fish.  Between dives, the sperm whale surfaces to breathe for about eight minutes before diving again.  Experts soon realised that just one such species exists, although there has been debate about whether this should be named P. catodon or P. macrocephalus, two of the names used by Linnaeus. “That’s a million times the concentration, so when you get some of these contaminants, even though they’re in fantastically low concentrations in the water, when you concentrate them up a million times, you’re creating a real hazard in the animal.”. Largest of the toothed whales, the deep-diving sperm whale is also the largest toothed animal in the world. Inside Natures Giants: The Sperm Whale. (2001). , The sperm whale's cerebrum is the largest in all mammalia, both in absolute and relative terms.  The teeth are cone-shaped and weigh up to 1 kilogram (2.2 lb) each. , When echolocating, the sperm whale emits a directionally focused beam of broadband clicks. The sperm whale is one of the species originally described by Carl Linnaeus in his landmark 1758 10th edition of Systema Naturae. The sperm whale is a pelagic mammal with a worldwide range, and will migrate seasonally for feeding and breeding. Such coastal groups were more abundant in pre-whaling days. Blue Whale is the largest animal that is alive, and it grows to an enormous length of more than 100 ft long and can weigh more than 150 tons. , The sperm whale belongs to the order Cetartiodactyla, the order containing all cetaceans and even-toed ungulates. The Sperm Whale is the largest toothed whale in existence, getting to be an average of 67 feet in length (20.5 meters). The heavy and powerful tail of an adult whale is potentially capable of delivering lethal blows. Individuals rarely, if ever, join or leave a social unit. Plunging to 2,250 metres (7,382 ft), it is the third deepest diving mammal, exceeded only by the southern elephant seal and Cuvier's beaked whale. Their clicks are among the most powerful sounds in the animal kingdom (see above).  In the same decade, the British began sperm whaling, employing American ships and personnel. Males average around 53 feet (16 m) but the largest can reach up to 66 feet (20 m).  The spermaceti at the core of the organ has a higher wax content than the outer areas. Despite evidence that sperm whales share similar codas, it is still unknown whether sperm whales possess individually specific coda repertoires or whether individuals make codas at different rates. Modern whaling was more efficient than open-boat whaling, employing steam-powered ships and exploding harpoons. The sperm whale ( Physeter macrocephalus, syn.  Such a tactic is described in Moby-Dick: "Say you strike a Forty-barrel-bull—poor devil! @GlosbeMT_RnD Erratene Übersetzungen. It is listed on Appendix I as this species has been categorized as being in danger of extinction throughout all or a significant proportion of their range and CMS Parties strive towards strictly protecting these animals, conserving or restoring the places where they live, mitigating obstacles to migration and controlling other factors that might endanger them. Unlike the other great whales on the endangered species list, the sperm whale is a toothed whale. Find out more about the largest predator in the world. The sperm whale is a pelagic mammal with a worldwide range, and will migrate seasonally for feeding and breeding. Like walrus ivory, sperm whale ivory has two distinct layers. Most toothed whales are small dolphins and porpoise, however there are a few large toothed whales such as the killer whale and the mighty sperm whale, which grows to 60 feet (18.3 meters) in length.  Analyzing the teeth is the preferred method for determining a whale's age. Leviathan May Have Tangled With the Giant Shark Megalodon.  However, at some potential feeding sites, the killer whales may prevail over sperm whales even when outnumbered by the sperm whales.  Hunting could be dangerous to the crew, since sperm whales (especially bulls) will readily fight to defend themselves against attack, unlike most baleen whales. The male’s head is typically about one third its total body length (e.g., 5.2 m (17 ft) in a 15.4 m (51 ft) long male). For other uses, see. The Sperm Whale (Physeter macrocephalus) is the largest of all toothed whales and is the largest toothed animal alive, measuring up to 18 metres (60 ft) long. , Slow clicks are heard only in the presence of males (it is not certain whether females occasionally make them). Both names are still used, although most recent authors now accept macrocephalus as the valid name, limiting catodon's status to a lesser synonym. Historical catch records suggest there could have been smaller aggression grounds in the Sea of Japan as well. , An older study, examining whales captured by the New Zealand whaling fleet in the Cook Strait region, found a 1.69:1 ratio of squid to fish by weight. Pitman, R. L., Ballance, L. T., Mesnick, S. I., & Chivers, S. J. The Eastern Pacific gray whale has fared better, with some 18,000 to 30,000 living along western North America. Currently the Endangered Species Act and the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES), prevents the sales of or trade in sperm whale ivory harvested after 1973 or scrimshaw crafted from it.