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Whale sharks' lifespans are estimated to be between 80 and 130 years, based on studies of their vertebral growth bands and the growth rates of free-swimming sharks. [ 9 ] [ 10 ] [ 11 ] Whale sharks have very large mouths and are filter feeders, which is a feeding mode that occurs in only two other sharks, the megamouth shark and the basking shark .
The silky shark (C. falciformis) is another contender for the largest requiem shark at a maximum weight of 350 kg (770 lb) and a maximum length of around 3.5 m (11 ft). The largest hammerhead shark is the great hammerhead ( Sphyrna mokarran ), which can reach 6.1 m (20 ft) and weigh at least 500 kg (1,100 lb). [ 34 ]
English: The size and growth of the whale shark (Rhincodon typus), represented by various individuals reported in the literature.A small 55 centimetres (22 in) pup, a 5.62 metres (18.4 ft) juvenile, a generic 9 metres (30 ft) young adult, a large 12.1 metres (40 ft) adult, and an exceptionally large adult with a precaudal length of 15 metres (49 ft).
Basking sharks have huge livers of up to 2000 kg in weight. Since the Suez Canal was built, blacktip reef sharks have swum through it from the Red Sea , and now live in the Mediterranean Sea too. A whale shark 's skin is around 10 cm thick, making it the thickest skin in the world.
Brain–body mass relationship for mammals [dubious – discuss]. Brain–body mass ratio, also known as the brain–body weight ratio, is the ratio of brain mass to body mass, which is hypothesized to be a rough estimate of the intelligence of an animal, although fairly inaccurate in many cases.
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They are found only in the shallow waters of the western Pacific. They are relatively small sharks, with the largest species reaching no more than 91 cm (2.99 ft) in adult length. [12] Rhincodontidae: Whale sharks: 1 1 The whale shark is the largest extant fish species, growing over 12 m (40 ft) long and weighing over 20 tonnes (45,000 lb). It ...