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The average size of sperm whales has decreased over the years, probably due to pressure from whaling. [35] Another view holds that exploitation by overwhaling had virtually no effect on the size of the bull sperm whales, and their size may have actually increased in current times on the basis of density dependent effects. [47]
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.
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 ...
Authorities working to assist a beached sperm whale stranded on a sandbar off Florida's Gulf Coast. ... the whale, measuring about 44 feet in length and weighing up to 70,000 pounds, was stranded ...
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.
• 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 ...
A juvenile sperm whale was spotted near Jennette’s Pier on North Carolina’s coast the morning of Dec. 27, ... weighing up to 90,000 pounds and reaching nearly 52 feet in length, according to ...
Sperm whale and bottlenose whale. The sperm whale (Physeter macrocephalus) is the largest species of toothed whale, with adult bulls (males) growing to be about 15–18 m (49–59 ft) long, and weighing about 45–70 metric tons (44–69 long tons; 50–77 short tons).