Visitors will get a rare chance to share the home life of otters when the animals go on camera at a nature reserve.
Filming equipment has been set up in an artificial holt at Daws Hall in Lamarsh.
And soon it will be beaming images into the learning centre to be seen by schoolchildren and adult visitors.
Iain Grahame, founder of Daws Hall Trust, said: “Forty years ago the survival of otters in Suffolk and Essex was causing grave concern.
“Since then, thanks to reintroductions and improved habitat management, otters have been making a welcome return in many areas. There have been regular recent sightings at Daws Hall.
“Our artificial otter holt already contains a camera recording any movements that occur. Otters are clearly being active in the area.”
The holt was constructed by the Dedham Vale and Stour Valley Project two years ago and the venture is also supported by Essex Wildlife Trust.
Daws Hall, which also has a large garden with rare trees and shrubs, has charity open afternoons on May 24 and 31, and June 14, from 1pm to 5pm. Dogs are not allowed in.