Loved the tour, boat was steady and safety was clearly a top concern. Everyone was checked back onto the boat at every stop so no-one was left behind. All equipment was top quality and the guides/divers clearly loved what they do, with a few spending...More

The guides speak english very well, are funny and help you where needed. The group was a little big, but in the water it isnt a problem. We did the tour the other way so we were the only boat at every Bay. There is...More

Fantastic full day tour with the Oxygen2 team, visited 5 spots around the island and even managed to see an enormous turtle which was such an amazing experience. The whole team were brilliant and couldn't do enough for you. Koh Tao is an amazing place...More

We had the best snorkeling half day trip in the afternoon. Our tour guides were very amazing! We even got a rare glimpse of two Buddha Whales. I saw so many beautiful fish and a reef shark. Definitely one of the best tours I have...More

Since all the companies providing this tour stop in the same spots, I had the chance to notice that Oxygen has the biggest boat, which is great for who (like me) gets seasick. In addition, the staff cared about our safety. We did not stop...More

We loved our day with O2 Oxygen tour : great organization and best team ever for fun snorkeling. The boat was nice, the lunch good thaï food on the boat and we swam in 5 different nice snorkeling spots. It is just a pity that...More

Oxygen have given me hope that there are careful, environmentally friendly and responsible tour operators working in Koh Tao. From the start of the day, the guides were very careful to explain to us about each environment we were entering. The guides were friendly and...More