Sir Paul McCartney's surfboard
A surfboard featuring a design by Sir Paul McCartney is being auctioned in aid of environmental charity Surfers Against Sewage.
The Cornwall-based campaigners are also selling boards with designs from artists such as Tracey Emin and Gavin Turk in London on 23 October.
All the boards are made out eco-friendly foam and 50% organic material.
SAS hopes to draw attention to eco-surfboard design and influence surfers into making greener choices.
SAS Board Director, Hugo Tagholm said: "These days you can buy not only greener surfboards, but eco-wetsuits, recycled leashes, organic surf wax and much more.
"These choices don't just apply to surfers - all recreational water users can make choices to ensure their chosen sport is as environmentally friendly as possible."