Back in January 1998, a married couple found themselves stranded in the ocean after a dive boat they were on left them behind. Their story ended up getting adapted into a film called Open Water - you can watch the trailer here:

Eileen and Tom Lonergan, from Baton Rouge, Louisiana, went for a day of exploration around the Great Barrier Reef on 25 January when they stopped in Australia on their way home from Fiji and Tuvalu.