A remarkable collection of photographs of underwater views of marine life less than a mile off the North Norfolk coast goes on display in Sheringham and Cromer from Saturday.

The extraordinary images, including this one of a moody-looking butterfish, were captured by underwater photographers Rob Spray and Dawn Watson, diving in the North Sea.

They show the incredible colours and creatures that are hidden from view just off the coast.

The photographs, taken by the Suffolk couple during repeated diving trips to North Norfolk, will be on display in an exhibition called 'Hidden Treasures of Norfolk's Secret Sea' as part of the Cromer and Sheringham Arts Festival.

Dawn and Rob, from Sibton, near Halesworth, have been diving since 1998, and watch the weather closely for conditions that are clear and calm enough to enter the water off the Norfolk coast.

Ms Watson said: 'I really just love the variety of marine life that you can see down there. That is what I'm interested in.'

Mr Spray said: 'After 12 years of diving you could get jaded, but then you drop into the water a quarter of a mile off the beach and find yourselves in a row of chalk arches. It's quite amazing.'

The photographs are on display from October 23-31 as part of Cromer and Sheringham Arts Festival at the Burlington Hotel, Sheringham, from 11am to 11pm each day and at The Blue Sky Cafe, Cromer, from 10am to 5.30pm. Entry is free.

The festival runs at venues from Salthouse to Overstrand from October 23-31, and includes music, drama, literature, art and craft. The full programme of more than 60 events is available at locations across North Norfolk as well as at www.casaf.co.uk.