Black Water (2008)

Synopsis: In the tradition of Open Water and Rogue comes a thrilling and suspenseful new horror film inspired by the true events of a terrifying crocodile attack. What begins as a leisurely boat tour down the rivers of Northern Australia becomes a horrifying race for survival when Grace, Adam and Lee become hostages of a man-eating crocodile. When their boat suddenly capsizes in a mangrove swamp they are shocked to find that their guide is missing. Realizing they've been attacked by a crocodile, the only place they can find safety is up a tree. Now, stranded in the flooded swamp, starving and terrified, the three must battle to survive the bloodthirsty beast who sits below - just waiting for one of them to lose their grip.     Source: Amazon.com