Thousands of people posed naked on Sydney's Bondi beach this morning for an art installation aimed at raising awareness about skin cancer and sun safety.

The famous surf strand became a nudist beach for the day as around 2,500 volunteers posed for photographer Spencer Tunick.

The large-scale art event "Strip Off for Skin Cancer" was in collaboration with a charity that encourages Australians to have regular skin checks.

The number of volunteers represented the 2,000 plus Australians who die each year due to skin cancer.

Mr Tunick is known for artworks of naked crowds at well-known landmarks around the world, including a similar event at the Sydney Opera House in 2010.

"It is only fitting that I use my platform to urge people to get regular check-ups to prevent skin cancer," said Mr Tunick.