On the Hawaiian island of Maui, shark-attack survivor Bethany Hamilton heads into monstrous waves to surf, even after having lost her arm to a tiger shark as a 13-year-old junior surfing champion.
#Sharks dont sleep professional
At Jeffreys Bay, South Africa, professional surfer Mick Fanning narrowly escapes the jaws of a great white during the final of one of the world's biggest professional surfing competitions. In Ballina on the east coast of Australia, Darren Rogers recounts how he tried to save Japanese surfer Tadashi Nakahara, who was mauled to death by a great white shark.
Sharks do engage in periods of rest throughout the day, but it is much different from the kind of sleep that other animals engage in. The team also investigated the sort of behaviour that typically indicates sleep in other animals (including humans) such as closed. Sharks become semi-conscious rather than fall asleep. The researchers found that the sharks’ oxygen levels decreased consistently during their resting periods, and were able to confirm that when these levels extended past five minutes the sharks were indeed asleep. Following a year of record numbers of shark attacks, Sharks Never Sleep takes us around the world to meet shark-attack survivors, shark lovers and shark hunters, who tell us of the primal fear of being eaten alive by a wild animal, the unimaginable grief of losing a loved one and extraordinary stories of encounters with sharks. It is a common misconception that sharks as a species never sleep because they must keep moving to stay alive. Sharks do not sleep like humans, but instead have restful periods.
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