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Male sperm whales are sexually mature at 11 to 12 meters (36 to 39 ft), and physically mature at about 15 to 16 meters (49 to 52 ft) in length, on average. Larger-than-average females have been generally recorded around 12 to 13 meters (39 to 43 ft), and larger-than-average males are usually stated to reach a maximum of about 18 to 19 meters ...
The average size of sperm whales has decreased ... found a 1.69:1 ratio of squid to fish by weight. [163] Sperm whales sometimes take sablefish ... In comparison, ...
Size comparison between the sperm whale (blue), the pygmy sperm whale (green), and the dwarf sperm whale (orange) The dwarf sperm whale can range in size from 2 to 2.7 m (6.6 to 8.9 ft) in length and 136 to 272 kg (300 to 600 lb) in weight—less than the 4.25 m (14 ft) and 417 kg (920 lb) pygmy sperm whale.
By comparison, the modern sperm whale length measures on average 11 m (36 ft) for females and 16 m (52 ft) for males, [18] with some males reaching up to 20.7 m (68 ft) long. [19] [20] [21] The large size was probably an anti-predator adaptation, and allowed it to feed on larger prey.
Size comparison of an average human and a pygmy sperm whale (Kogia breviceps) This W3C-unspecified vector image was created with Inkscape . Size comparison of an average human and a dwarf sperm whale (Kogia sima).
[34] [35] Its closest competitors are also baleen whales, the fin whale (Balaenoptera physalus), which can reach a size of 27 m (89 ft) in length and weight of 109 tonnes, and the bowhead (Balaena mysticetus) and North Pacific right whale (Eubalaena japonica), both measured up to 21.2 m (70 ft) and estimated at that length to weigh about 133 ...
• Physical maturity for female sperm whales is around 10.6 to 11 meters (35 to 36 ft) on average, whilst for male sperm whales, it is around 15 to 16 meters (49 to 52 ft) in length. Above-average females have been recorded up around 12 to 13 meters (39 to 43 ft), and the maximum size usually stated for males is males around 18 to 19 meters ...
Size comparison of an average human and a pygmy sperm whale (Kogia breviceps) Date: 19 May 2007 ... Description={{Inkscape}}Size comparison of an average human and a ...