What's Hiding 50 Feet Deep Under this Thailand Island?! (Scuba Diving Search) ℹ️ 🌴 Each year, Koh Tao, Thailand, attracts thousands of visitors with its diverse wealth of marine life. In fact, this tiny island of just 21 square kilometres pumps out more scuba certifications annually than nearly anywhere else in the world, second only to Queensland, Australia – but at a much lower price point. We were able to eat, sleep, and scuba dive for about $50 USD a day which is near impossible to find anywhere in the world!