Experience the world of bubble-free diving with the Hollis PRISM 2 closed circuit rebreather. Our Discover Rebreather experience is the perfect way to try CCR diving in a safe, controlled environment before committing to a full certification course.

Take your first step into the world of Hollis PRISM 2 rebreather diving. The TDI Air Diluent Diver course introduces you to the fundamentals of CCR diving, giving you longer dive times, bubble-free exploration, and the skills to safely operate one of the world's most respected technical rebreathers.  

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Whether you're an experienced open circuit technical diver making the switch to the Hollis PRISM 2 Rebreather, or an Air Diluent Diver ready to advance your skills, the TDI Air Diluent Decompression Diver course is your next step. Learn to safely conduct planned decompression dives while unlocking the full potential of closed circuit rebreather diving. 

Ready to explore deeper? The TDI Hollis PRISM 2 Rebreather Helitrox Diver course introduces helium-based CCR diving, allowing you to safely dive to 45 meters with greater clarity, reduced narcosis, and increased confidence. It's the ideal next step towards advanced mixed-gas technical diving..

Take your Hollis PRISM 2 Rebreather to new depths with the TDI Mixed Gas CCR Diver course. Master helium-based closed circuit rebreather diving to 60 meters, unlocking longer bottom times, reduced narcosis, and the confidence to explore deeper technical dive sites..