top of page


Imagine for a moment being able to dive and explore for up to 4 hours on a single dive. Or perhaps becoming acclimated to a world without the added noise of exhaust bubbles. Or having the feeling and physiological advantages of breathing a "warm gas". 


Now imagine being able to get closer to marine life without intimidating or scaring them with your exhaust bubbles.


Welcome to the world of the Prism2 Rebreather.

Prism2 Semisidecc.png

Not to long ago the idea of diving a Closed Circuit Rebreather (CCR) was only used by the ultra extreme  technical divers, but not any more!


The new generation of Type T Closed Circuit Rebreathers such as the Hollis Prism 2 are lightweight, easy-to-transport and have sophisticated electronics to simplify their use.


The Hollis Prism 2 meets all this criteria with it's ability to be controlled electronically or manually allowing you to choose how you wish the loop PPO2 to be maintained.

Shoulder mounted counter lungs and rear mounted radial scrubber provide easy breathing with low resistive effort. With electronic control and primary LED displays, a backplate/wing assembly that provides a complete makes it ready to dive out of the box.


The Hollis Prism 2 is a fully Closed Circuit Rebreather. What this means is there is simply no exhaust bubbles.


Your exhaled air is recycled through a scrubber and monitoring system filtering out the carbon dioxide you exhale. That air is then breathed again by you - thus the name Rebreather.

The benefits of diving a Closed Circuit Rebreather such as the Hollis Prism 2 include longer no stop limits, reduced gas consumption because you reuse most of your exhaled gas, and unmatched wildlife encounters because you don’t release those annoying bubbles.

Recreational Rebreathers are a lightweight compact unit as with the Explorer  

Semi-Closed Rebreather which only uses a small cylinder of Nitrox (32-40% o2) instead of the traditionally larger bulkier two cylinder technical systems that use multiple gases.


The Explorer recirculates the air that you exhale through a scrubber system filtering out the CO2. Through a series of sensors and via constant monitoring with it's on board computer system, the Explorer Recreational Rebreather offers  much of the performance of a full technical CCR.


This is because its PPO2 controller automatically adjusts the set point to maximize the diver’s dive time based on the their no-decompression limit (NDL) time and remaining gas supply. It also maintains oxygen levels within safe limits to minimize the risk of hypoxia.


With the automation of many functions, and in some cases making decisions for the diver, the new generation of Recreational Rebreathers are easier to use and therefore reduces the potential for user errors which can lead to accidents.



Through self-study, video's and instructor-guided sessions, you’ll learn how the Explorer Recreational Rebreathers work and the importance of proper setup and maintenance. 


Because rebreathers vary significantly, you’ll also study the manufacturer’s literature specifically for the Explorer 2 Recreational Rebreather you’ll train on:


  • During class room sessions and the required dives, you’ll learn and work on:

  • History and evolution of rebreathers

  • Comparison of open circuit and semi-closed  rebreathers

  • Practical mechanics of the system

  • Review of nitrox

  • Gas physiology

  • formula work and metabolic consumption

  • Dive tables

  • Dive computers

  • Problem solving

  • Dive and operational planning


To enroll in the Semi-Closed Circuit Rebreather course you must be minimum age of 18 (15 with parental consent) and process a minimum certification of  SDI Nitrox Diver or equivalent. 

The SDI Nitrox Diver certification may be combined with the Semi-Closed Circuit Rebreather class.

You must complete all required academic exams and open water sessions. As there is a good amount of self study required prior to attending class,, it is highly recommended that you obtain the necessary Student Diver materials and forms as soon as possible.

You will need your standard dive equipment, mask, fins and exposure suit. Snorkels should be the collapsible type that fit in your pocket as well as a Delayed Surface Marker Buoy (DSMB) and reel.

Your Semi-Closed Circuit Rebreather Instructor may advise you about other equipment requirements.


What is included in your class is the Semi-Closed Circuit Rebreather Manual - pre-dive checklist slate - Intersorb - Nitrox fills and Explorer Recreational Rebreather rental.


Not included is basic diving equipment such as mask, snorkel, fins boots, weights, BC, regulator, tanks and any additional equipment required for the particular

 Semi-Closed CircuitRebreather certification.


In addition all entry/boat fees, transportation to/from pool, dive training sites or boat docks is not included.


Let one of our crew members introduce you to the world of the Recreational Rebreather and show you The Dive Place difference!

bottom of page