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English: A size diagram comparing various size estimates for the extinct shark Otodus megalodon to Carcharodon carcharias (great white shark), Rhincodon typus (whale shark), and a human. Also shown are megalodon specimens the estimates are based on, vertebral column IRSNB P 9893, upper anterior tooth NSM PV-19896, and lateral tooth GHC 6.
A great white shark was captured near Kangaroo Island in Australia on 1 April 1987. This shark was estimated to be more than 6.9 m (23 ft) long by Peter Resiley, [67] [73] and has been designated as KANGA. [72] Another great white shark was caught in Malta by Alfredo Cutajar on 16 April 1987. This shark was also estimated to be around 7.13 m ...
Since 1837, there have only been two unprovoked shark attacks on humans in Washington, both in Grays Harbor County. Neither was fatal. The reality is that humans are a bigger threat to sharks than ...
Shark Anatomy (50693674756) The gill slits of a whale shark flaring as it expels water from its pharyngeal cavity. In the shark anatomy image, it depicts the beginning half of the shark, including the gills. The shark gills are especially important and were evolved from the chordate pharyngeal gill slits synapomorphy.
Select examples include the bull shark, tiger shark, great white shark, mako sharks, thresher sharks, and hammerhead sharks. Sharks are caught by humans for shark meat or shark fin soup. Many shark populations are threatened by human activities. Since 1970, shark populations have been reduced by 71%, mostly from overfishing. [7]
English: Comparison of size of killer whale (Orcinus orca) and great white shark (Carcharodon carcharias).This image assumes an average length of 4.6 metres for a great white shark (males measure 3.4 to 4.0 m (11 to 13 ft), and females measure 4.6 to 4.9 m (15 to 16 ft) on average), and 6.5 metres for a killer whale (males typically range from 6 to 8 metres (20 to 26 ft) and females from 5 to ...
Ancient relative of the great white shark. Most species of Ptychodus lived between 100 and 80 million years ago during the late Cretaceous period. The deposits in which the fossils were discovered ...