This weekend, hundreds of volunteers will scour the region's coastline looking for litter and other debris washed up on the shore.
It's part of a campaign by the pressure group Surfers Against Sewage. It warns that, although our beaches look clean at first glance, they can be strewn with plastic and other debris that threaten marine habitats.
Beaches in the South West have been recommended by the Marine Conservation Society in their good beach guide. But it warns heavy rains which have hit in the past week are bad news for the country's beaches, as washing rain sewage could flow into bathing areas.