The on-the-day splash-in competition, organised by the British Society of Underwater Photographers (BSoUP), runs from the port's Mount Batten.

Competitors can photograph either around Plymouth or further afield – as long as they get their entries back to the competition base by the allotted time.

The overall winner will depart on a seven-day liveaboard holiday for two in the Maldives (exclusive of flights and taxes) courtesy of Maldives Scuba Tours.

Last year, 53 divers took part.