We’ve teamed up with Seiko, who make the Prospex PADI Special Edition Kinetic Dive Watch to look at the challenges faced by divers, and why accurate timekeeping is essential in the most extreme underwater environments.

To outsiders, diving probably looks like a fairly sedate sport. But as anyone in the know will tell you (and as these incredible underwater survival tales demonstrate all too clearly) it can also be incredibly dangerous.

One of the most essential elements to staying safe underwater is keeping time accurately. In the video above Craig Mainprize, one of the UK's best-qualified diving instructors, explains why having a good dive watch like the Prospex PADI Special Edition is important.

Find out more about the importance of timekeeping in diving below: