Black Water (2008)

Plot

Grace, her boyfriend Adam, and her sister Lee embark on a holiday adventure in Northern Australia, where a river tour takes a harrowing turn. Their boat unexpectedly capsizes, leaving them marooned in a treacherous swamp. Panic sets in as they grapple with their survival, increasingly aware that they are not alone—something lurks in the murky depths, observing their every move. The trio must summon their wits and resilience to navigate the dangers of the flooded wilderness and escape the lurking threat before it's too late.