The Reef (2010 film)

The film is based on the true story of Ray Boundy, who was the sole survivor of a similar incident in 1983. The film's five-week shoot began on 12 October 2009 in Queensland's Hervey Bay, Fraser Island and Bowen Bay, with additional shark footage completed in South Australia. While in production of the film, cameras were streaming the film online on the film's website on 5 November. Traucki stated that ``This kind of marketing strategy is absolutely vital'' and ``the mentality inside the Australian industry doesn't usually get behind original marketing strategies like this. I have ended up building this one myself, late at night with my web team.''

Question: was the movie the reef based on a true story
Answer: yes