Koh Tao freediving - The island boasts world class freediving instructors. People have been freediving since way back in the 5th century BC and basicly little has changed since then. No breathing equipment is needed since as a freediver you hold your breath. Freediving is a relaxing and liberating experience that allows you to experience the underwater world more intimately. Humans have a reaction when holding their breath called the mammalian diving reflex. This lets the human body endure depth and lack of oxygen far beyond what is normal. When learning to freedive you will be taught how to develop this reflex along with other special techniques allowing you to enjoy the underwater wonders for longer.