Proteus

From the synthetic DNA known as PROTEUS, science has created a monster of unimaginable horror. Nicknamed "Charlie", the creature lurks an oil rig's waterlogged shadows, inhabiting and taking the shape of every life form it touches. And now, "Charlie" has found human food in the form of three misfit couples from a sunken yacht. One by one, these six intrepid seafarers are about to discover why death is only the beginning of their terror. Come hell or high water, it's survival of the fittest against an unstoppable killing machine.