Sharp’s Brewery is sponsoring the Blue Flag programme.
The Blue Flag is a voluntary eco-label awarded to more than 4,000 beaches across the world.
Throughout June, Sharp’s will donate 5p from every pint sold of its limited edition beers Rockpool, Rising Tide, Offshore and Point Break.
It has already sponsored the Blue Flag applications of Polzeath, Trevone, Porthtowan, Porthmeor and Gyllyngvase beaches.
Senior brand manager, James Nicholls, said: “We are proud to be supporting the coastal community in helping these beautiful beaches obtain and retain the prestigious Blue Flag Status that they so highly deserve.”