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Great White Sharks    great white shark head in black and white pixels
Copyright: scenebank.com            
Started: November 7, 2011.            
size-comparison of 6foot man to 20ft great white shark

Length:
6 m (20 ft) [adult],
1.8 m (5.5 ft) [juvenile],
0.5 m (1.6 ft) [pup]
Height:
1.8 m (6 ft) [adult, pectoral fin-tip to dorsal fin-tip]
Weight:
2,268 kg, (5,000 lbs) [adult] [ref1]
Life Stages:
pup (at birth),
juvenile (0-15 years),
adult (15-30 years)
Lifespan:
up to 30 years
Speed:
cruising, 8 kph (5 mph, 4.3 knots), attack, 19 kph (12 mph, 10.2 knots)
Species:
Carcharodon carcharias
Sense of Smell:
exceptional
Vision:
average
Coloration:
countershading (belly is white, topside is gray). Serves as an aquatic camouflage.
Prey detection:
special sensory cells detect faint electrical signals of prey animals.
Habitat:
coastal waters in all major oceans in temperatures between 12-24 °C (54-75 °F).
Bite Force:
18,000 Newtons (4,000 lbf). It takes just 4,000 Newtons to break a human thighbone. Another max. bite-force estimate is: 2,700 Newtons (600 lbf). (Feb1-2012)
Dorsal Fin:
sharks and dolphins are sometimes confused because both dolphins and sharks have large dorsal fins.  However, cruising dolphins don't have a tail fin that constantly stays above the water.  If you see a big fin above the water, look for the second above-water vertical fin behind it.  A handy rule is "shark if 2-fins, dolphin if 1-fin."
Evolution:
great white shark species is 16 million years old. The body plan of all sharks is so efficient that it has not significantly changed in 400 million years.

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WMV-HD    7:12 minutes    16.7 MB    More Details...








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