Once on the island, the main mode of transport is simply walking. The roads are well defined, and crossing the island takes 20 minutes at most. Bicycles and golf carts are also common and can be easily rented. Visitors prone to sunburn should take extra precautions, as the island is entirely white coral sand, and reflected sunlight can cause mild sunburns even in the shade. The Island is also used as a popular launch off for scuba diving the Great Blue Hole, with several expeditions per week.