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Anatomy and Appearance. In terms of length, blue whales have often been compared to three school buses lined up back to back. These whales measure 90-100 feet long and are estimated to weigh from ...
The whale then pushes the water out, and animals such as krill are filtered by the baleen and remain as a food source for the whale. Baleen is similar to bristles and consists of keratin, the same substance found in human fingernails, skin and hair. Baleen is a skin derivative. Some whales, such as the bowhead whale, have
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]
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.
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 ...
Pygmy blue whale males average 83.5 tonnes (184,000 lb) to 99 tonnes (218,000 lb). [53] The weight of the heart of a stranded North Atlantic blue whale was 180 kg (400 lb), the largest known in any animal. [54] The record-holder blue whale was recorded at 173 tonnes (190 short tons), [55] with estimates of up to 199 tonnes (220 short tons). [56]
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Rorquals (/ ˈ r ɔːr k w əl z /) are the largest group of baleen whales, comprising the family Balaenopteridae, which contains nine extant species in two genera.They include the largest known animal that has ever lived, the blue whale, which can reach 180 tonnes (200 short tons), and the fin whale, which reaches 120 tonnes (130 short tons); even the smallest of the group, the northern minke ...