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Livyatan is the largest fossil sperm whale discovered, and was also one of the biggest-known predators, having the largest bite of any tetrapod. [1] [8] Diagram comparing the upper and lower size estimates of Livyatan (bottom three) with the size of mature sperm whales, including one of the largest individuals recorded (top three), and a human
Zygophyseter could reach an estimated length of 6.5 to 7 meters (21 to 23 ft), compared to the 12.5-to-18.5-meter (41 to 61 ft) modern sperm whale. [11] It is thought that this whale had twelve thoracic vertebrae and at least ten lumbar vertebrae. The type specimen had only 8 thoracic vertebrae preserved, and only the atlas of the neck vertebrae.
Livyatan probably targeted medium-sized whales ranging in size from 7–10 m (23–33 ft). Macroraptorials probably competed with the extinct giant shark megalodon for the same food sources. [7] [10] [11] [12] In sperm whales, the supracranial basin holds the spermaceti organ, a series of oil and wax reservoirs which aids in echolocation.
The sperm whale's unique body is unlikely to be confused with any other species. The sperm whale's distinctive shape comes from its very large, block-shaped head, which can be one-quarter to one-third of the animal's length. The S-shaped blowhole is located very close to the front of the head and shifted to the whale's left. [36]
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). The two kogiid species are much smaller, around 2.5 to 3.5 m (8 ft 2 in to 11 ft 6 in) in length, and weighing ...
A livyatan refers to a toothed whale that actually existed. According to Kim, the livyatan is an ancient whale related to a modern sperm whale. Its skull is about nine feet long and its teeth are ...
Inside Nature's Giants is a British science documentary, first broadcast in June 2009 by Channel 4. The documentary shows experts performing dissection on some of nature's largest animals, including whales and elephants. The programme is presented by Mark Evans. The series attempts to uncover the secrets of the animals examined.
Blue Planet II is a 2017 British nature documentary series on marine life produced as a co-production between the BBC Natural History Unit, BBC America, Tencent, WDR, France Télévisions, Tencent and CCTV-9 in partnership with The Open University.