Below are some pictures from last weekends Boston Sea Rovers rebreather demo.
We got to try 4 different rebreathers, the rEvo, the Dive Rite O2ptima, the Silent Diving Evolution, and the Hollis Prism.
It was a great experience, in particular to be able to try different rebreathers side by side. I have demo/ tried a couple of other different rebreathers, but having the opportunity to try them together was great.
The short class was also very good.
rEvo
![Image](http://i17.photobucket.com/albums/b60/wavejockey/9230d331-7add-42d9-9c5e-bd127cf49d86_zps9c021ffe.jpg)
![Image](http://i17.photobucket.com/albums/b60/wavejockey/24a9fafb-4822-49bc-9a56-8f006a236f82_zps5ae9da1c.jpg)
![Image](http://i17.photobucket.com/albums/b60/wavejockey/62a61911-bf2f-41fe-ac3d-92dba8045e33_zpsc96695ae.jpg)
![Image](http://i17.photobucket.com/albums/b60/wavejockey/498527fb-7af7-4643-a222-7219b177e840_zps82fe1090.jpg)
Dive Rite O2ptima
![Image](http://i17.photobucket.com/albums/b60/wavejockey/77d5607a-9bd2-4f3a-a00d-8fed945c2a52_zps5fc75f9d.jpg)
![Image](http://i17.photobucket.com/albums/b60/wavejockey/35b40f02-0118-4391-ac87-d1edd3f2b065_zps4926c23a.jpg)
Hollis Prism
![Image](http://i17.photobucket.com/albums/b60/wavejockey/ad88788b-1e10-45db-87c0-426400da7c92_zps494f9540.jpg)
Silent Diving Evolution
![Image](http://i17.photobucket.com/albums/b60/wavejockey/47d89e23-e225-4fc0-b3b2-b00bb1e818b3_zps7883e285.jpg)
All of the rebreathers underwater:
![Image](http://i17.photobucket.com/albums/b60/wavejockey/527ccb3c-6ba3-4714-802e-7b295ec9073e_zpse2fa3ef8.jpg)
![Image](http://i17.photobucket.com/albums/b60/wavejockey/2c6adf9c-3ccd-476e-aee6-125a22f54693_zpsc117b403.jpg)
Note: These are all modern, but I am sure everyone knows that rebreathers do predate open circuit scuba.