A diver (Tony Youseman) on one of the quadruple propellersRebreather training in Malta.Santi drysuit and heating system on sale here,Rebreather diver in the red sea

The Poseidon MKVI is the world’s first rebreather for recreational divers.


It’s a fully­closed, fully ­automated unit that will make you see diving in a different light.

The system comprises a breathing loop (mouthpiece, hoses, counter lungs and backpack) with associated electronics module, and two independent gas cylinders. One contains 100% compressed oxygen which is added to the breathing loop as the diver consumes it. The second cylinder typically contains compressed air “diluent” to compensate for compression in the breathing loop as the diver goes deeper.

It’s also a back­up system, containing enough breathable gas to bring the diver to the surface in case of an emergency.


Poseidon’s MKVI has 5 big advantages over traditional open circuit equipment:


3 hours typical dive time

Safer and easier to use

Lighter and smaller

No decompressions stops

Silent operation makes you part of the environment; not just a visitor.

The MKVI, the first true technological breakthrough in decades, is a game­changer.

International Association of Rebreather Trainers International Association Nitrox and Technical Diver Padi Tec Rec Technical Diving International