The sperm whale (Physeter macrocephalus)

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The sperm whale (Physeter macrocephalus), or cachalot, is the largest of the toothed whales and the largest toothed predator. It is the only living member of genus Physeter, and one of three extant species in the sperm whale family, along with the pygmy sperm whale and dwarf sperm whale of the genus Kogia. Mature males average 16 metres (52 ft) in length but some may reach 20.5 metres (67 ft), with the head representing up to one-third of the animal's length.
The sperm whale is a pelagic mammal with a worldwide range, and will migrate seasonally for feeding and breeding. Females and young males live together in groups while mature males live solitary lives outside of the mating season. The females cooperate to protect and nurse their young. Females give birth every four to twenty years, and care for the calves for more than a decade. A mature sperm whale has few natural predators, although calves and weakened adults are sometimes killed by pods of orcas.
The sperm whale is the largest toothed whale, with adult males measuring up to 20.5 metres (67 ft) long and weighing up to 57,000 kilograms (56 long tons; 63 short tons). By contrast, the second largest toothed whale (Baird's Beaked Whale) measures 12.8 metres (42 ft) and weighs up to 15 short tons (14,000 kg).
Average sizes Length and Weight
Male 16 metres (52 ft) 41,000 kilograms (45 short tons)
Female 11 metres (36 ft) 14,000 kilograms (15 short tons)
Newborn 4 metres (13 ft) 1,000 kilograms (1.1 short tons)

credits to @mike_korostelev @mike_korostelev @hidrobiology21 and @koba_tan_oga

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*This image is copyright of its original author

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*This image is copyright of its original author

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