This large marine mammal measures up to 18 m long and can weigh 40 tonnes, making it one of the largest toothed whales (odontocetes). The undisputed kings of freediving, they can dive down to more to than 2,000 m and stay underwater for over an hour. Their extraordinary abilities enable them to reach the very deep waters of the ocean where they capture giant squid and large fish. New-borns have been observed in the Mediterranean in all seasons. Sperm whales can live to the age of eighty.