two men riding bicycle on the beach

I took this shot of my two friends as we were biking on the beach in south of the Island called Koh Samui in Thailand. At low tide you can ride on the hard packed sand banks up to 400 meters off shore and see the Island in the background is called Koh Tan. This is an all green Island with no vehicles allowed. You can ride a bike or electric golf cart but not gas powdered vehicles allowed.