Surfers in Australia lit up a beach in Sydney, with a special glow in the dark surfing session!
A group of 17 surfers put on special wetsuits and rode surfboards wired with neon coloured tubes.
They braved the waves on Bondi Beach on Wednesday night to celebrate the start of summer down under.
Surfer Victoria Larnach said: "It was great. It was a little cold when we went out, but the waves were good and everybody was having a blast."