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Like other known megatooth sharks, the fossils of O. angustidens indicate that it was considerably larger than the extant great white shark, with the largest individuals possibly measuring up to 11–12 metres (36–39 ft) long. [7] [8] A well preserved specimen from New Zealand is estimated at 9.3 m (31 ft) in length. [5]
The original hypothesis of the great white shark's origin held that it is a descendant of a lineage of mega-toothed sharks, and is closely related to the prehistoric megalodon. [29] [30] These sharks were considerably larger in size, with megalodon attaining an estimated length of up to 14.2–20.3 m (47–67 ft).
However, it is smaller than that of megalodon and Otodus angustidens; the tooth length of O. megalodon is 38 to 178 millimetres (1.5 to 7.0 in) and O. angustidens 25 to 117 millimetres (0.98 to 4.61 in). [4] Smaller individuals were about 4 metres (13 ft) long. [5]
The largest male white shark ever tagged by the research group OCEARCH was spotted in Florida waters. The shark, named Contender, was first tagged and released by OCEARCH on Jan. 17.
Size matters to these feuding scientists.
A 2015 study linking shark size and typical swimming speed estimated that megalodon would have typically swum at 18 kilometers per hour (11 mph)–assuming that its body mass was typically 48 t (53 short tons; 47 long tons)–which is consistent with other aquatic creatures of its size, such as the fin whale (Balaenoptera physalus) which ...
“We waited for one of the rods to go off.”
The megamouth is considerably less active than the other filter-feeding sharks, the basking shark and the whale shark. The megamouth has a stout body and a long, wide bulbous head. Megamouths are large sharks, able to grow to 5.49 metres (18 ft 0 in) in length. [16] [17] [18] Mature males average at 4 m (13 ft) and females at 5 m (16 ft).