The Reef (2011)

Synopsis: On the beautiful but dangerous waters of Australia's Great Barrier Reef, ship delivery man Luke and four friends chart a yacht to its new owner. Along the way, their ship is torn open by sharp rocks and begins to sink, leaving the passengers with a terrifying choice: stay on board with slim hope of rescue, or swim twelve miles to the nearest island through shark-infested waters. When they enter the water, an unstoppable, relentless Great White immediately follows their trail for a white-knuckle chase that will fill the waters with blood! From the director of the acclaimed monster hit Black Water comes a pulse-pounding, visually stunning thriller that never lets go until the final, heart-stopping scream!     Source: RottenTomatoes.com