Images from the River Fal feature on a new relaxation and therapy DVD.
Cornish film company Calmer by Nature is behind the production.
Cygnets taking their first swim, young seals playing in the surf and wooden sailing boats are among the images on Calmer by the Water.
Chief executive Barry Wheelock filmed much of the footage in Cornwall, including on board his boat in the River Fal.
He said: "Even in the height of summer it has a wonderful freedom. It's like being in the Amazon.
"I was spoiled for choice. There are some beautiful rivers in Cornwall, with a real wilderness quality."
This is the third of the company's nature DVD's which have no commentary or music, just the sounds of nature.
Kath Smith, an occupational therapist and director of MBB Connections at Truro said: "Calmer by Nature offers a great therapeutic resource, a tool to help clients from use as a self soothe strategy to facilitating reminiscence."For more details about the DVD's click here
