Couldnt reccomend this diving school highly enough especially if you have never dived before. Me and my girlfriend were both excited to try this but also a bit nervous. We had Rick as our instructor for our open water course. If you get him you are in our opinion very lucky. He made all 3 days of the course good fun but was also very proffesional and put us at ease as he is so calm under the water. Though we have heard from other travellers good things about all of the instructors. Also have to mention Andreas who assisted our dives and is a dive master in training. We have no doubt he will go on to become just as good. Overall great fun and made to feel safe at all times. If we ever return to Koh Tao will definately be diving with big blue again. Accomadation also excellent and all staff very helpful at all times. Thanks guys! Neil and Toni - Farnborough, UK.