The Poseidon Discovery is the world’s first rebreather for recreational divers and the first to be approved by PADI as a Type-R recreational rebreather for PADI Rebreather courses. It’s a fully­ closed, fully ­automated unit that will make you see diving in a different light.The new range of PADI recreational courses are now being conducted at Calypso in Durban, South Africa on the Poseidon Mk6/Se7en – the first rebreather to meet PADI’s recreational rebreather requirements.

The new Poseidon Discover MKVI or Se7en is so simple and safe to operate that it can be used for entry level diver training, right out of the box. Because the unit has an open circuit (traditional scuba) alternate air system, PADI have set the minimum prerequisite of a qualified entry level diver with some open circuit diving experience.

Click here to view the Poseidon MK6 User Manual.

The most common misconception we hear about rebreathers is that they are only for deep diving. Whilst they certainly provide benefits for deep diving, they are actually at their best in the 20-40m range. Coincidentally this is within the sport diving depth range.

Poseidon have recognized this, and developed a rebreather specifically to cater for the diver who wishes to stay in a little longer without incurring decompression obligation, and also doesn’t want to delve into how the unit works in order to be able to use it. Essentially, learning to dive using the Discovery Mk VI is possible without having to have had years of experience. The simplicity of the unit enables a diver who is just starting, or has little experience to learn to use one extremely simply and quickly.

The pre-dive checks are almost entirely performed without diver intervention, and if all systems check out, the unit is happy to dive and will check itself throughout the dive. If at any time it is unhappy with the results of its tests, it tells you to bail off the unit and ascend.

Calypso currently has 5 units available for rental.

This is a huge change in approach, and will open rebreathers up to a much larger cross section of the diving community. The Poseidon MK6 will be upgradeable to the new MK7 technical rebreather once it is launched. The Poseidon Tech features a redundant back-up rebreather with fully automatic switching.

PADI Integrated Open Water & Advanced Open Water Diver Rebreather Certification


  • PADI Advanced Open Water Diver
  • PADI Enriched Air diver
  • 30 logged dives
  • Minimum 18 years old


  • All manuals
  • Use of Poseidon MKVI Rebreather, Scrubber
  • O2, Airfills and Bailout Cylinders

Course Outline:

This course combines the PADI Open Water and Advanced Open Water rebreather levels and qualifies you to dive independently with either another rebreather or open circuit diver to a depth of 30 meters/100 feet and within no decompression limits, and to be able to safely bail out to open circuit at any time.

Knowledge development takes place through independent study and Instructor-led prescriptive teaching. Students will have the PADI Rebreather Diver manual that has both the Open Water and Advanced Open Water portions, PADI Rebreather Predive Checklist Slate, PADI Recreational Rebreather Diving Key Skills Video and manufacturer’s manual and/or other support literature for the rebreather used in course.

There will be practical sessions in unit assembly and dive checks. The combined course includes 6 training dives with a minimum time on the unit of 320 minutes.

In-water skills cover clearing a flooded loop, monitoring heads-up display (HUD) and electronics, buoyancy and trim, switching to bail out, alternate air source use with another rebreather diver, deploying a submersible marker buoy, rigging and carrying an additional off-board bail out tank, switching to both on-board and off-board bail out, and deeper dive planning on a closed circuit rebreather.

Price: R14000.00 / Person


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