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A blue whale with its bow wave, showing the blowhole. The blue whale is a slender-bodied cetacean with a broad U-shaped head; thin, elongated flippers; a small 33 centimeters (13 in) sickle-shaped dorsal fin located close to the tail, and a large tail stock at the root of the wide and thin flukes.
Diagram featuring the typical skeletal of a toothed whale (top) and a baleen whale (bottom) The cetacean skeleton is largely made up of cortical bone , which stabilizes the animal in the water. For this reason, the usual terrestrial compact bones, which are finely woven cancellous bone , are replaced with lighter and more elastic material.
The femur is the longest bone in humans. The longest bone in the human body is the femur. [23] The largest artery is the aorta [24] and the largest vein is the inferior vena cava. [25] The largest internal organ (by mass) is the liver, with an average of 1.6 kilograms (3.5 pounds). [26]
The blue whale is the largest animal on Earth and likely the largest animal ever to have lived. While this ocean mammoth is dubbed “blue,” its color is more a reflection of the water it swims ...
A skeleton of the blue whale, the largest animal, extant or extinct, ever discovered. Mounted outside the Long Marine Laboratory at the University of California, Santa Cruz. The largest blue whale ever reliably recorded measured 98ft (30m) long. A peregrine falcon, the world's fastest animal. Peregrines use gravity and aerodynamics to achieve ...
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Accurate measurements of the blue whale are difficult to take because the whale's erect length can only be observed during mating. [119] The penis on a right whale can be up to 2.7 m (8.9 ft) – the testes , at up to 2 m (6.6 ft) in length, 78 cm (2.56 ft) in diameter, and weighing up to 238 kg (525 lb), are also the largest of any animal on ...
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