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.
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Hotter again on Monday with temperatures up to 25 degrees. Cooler on the coast and on the Isles of Scilly.
A clear night, hotter again on Monday.
Highs this afternoon of around 23 or 24 degrees. Cooler on the coast.