Yes, there are several movies about sharks that are based on true stories. For example, The Shallows (2016) is based on the story of surfer Bethany Hamilton, who was attacked by a tiger shark in 2003 and went on to become a professional surfer. The Cove (2009) is a documentary about the annual killing of dolphins in Japan. Open Water (2003) is based on the true story of a couple who went on a scuba diving trip and were left stranded in the ocean. Jaws (1975) is not based on a true story, but is inspired by the 1916 shark attacks in New Jersey. Finally, Deep Blue Sea (1999) is a science fiction horror film loosely based on the real-life shark attacks at Amity Island in 1975.
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