Technical gear

Waterhaul, Fourth Element, Cave Diving Line Arrow, Rosemary E Lunn, Jim Standing, XRay Mag, XRay Magazine,
Five Recycled Line Arrows

Fourth Element Cave Line Markers

As much as possible, Fourth Element embraces two principles; Zero Waste and Zero Plastic. They achieve this by re-purposing as much plastic as possible, whilst finding new uses for products at the end of their lives. The company has therefore carved out an environmental niche by producing "grave to cradle" 'Ocean Positive' products for scuba divers. 

We believe that this is the way,” said Jim Standing, co-founder of Fourth Element. “We are all going to have to tackle the challenges of a post covid world and one of these will be how we deal with the waste we have created as part of keeping ourselves and in particular, our frontline workers protected. We intend to play our part.”

First Impression

Michael Thomas, a respected TDI cave diving educator, has already used these line markers in a cave class. 

Why Sidemount is My True DIR Diving Option

Divers in Sinji Cave, Arkadia, Greece. Photo by Matteo Varenna.

Doing something right has never been more important that being ready—and even eager—to change for the better. What was considered great a few years ago is not always great today. All we need is to find a better option, since what was right yesterday, may not be right anymore. Doing It Right (DIR) is about doing it better than it was done before. For me, that is the only right thing to do.

Poseidon M28 dive computer, X-Ray Mag, Rosemary E Lunn
An M28 On A Divers Arm

Poseidon M28 Computer Update

"Due to changes in certification standards and changes in approvals of key electronics components that in turn have led to delays in the CE certification process, the expected delivery time for the first batch of M28 Computers will now be in August.

We sincerely apologize for this delay, however it is out of our hands and we are doing everything we can to keep things moving forward swiftly."

Poseidon's new Solid State Sensor (SSS)
Poseidon's new Solid State Sensor (SSS)

Poseidon Announces "Game-changing" 'Solid State Oxygen Sensor'

In early 1968 John Kanwisher and Walter Stark met by chance. They soon learned that each man had been considering the feasibility of a mixed gas closed circuit rebreather (CCRB) using electronic sensors to control the Partial Pressure of Oxygen (ppO2). They collaborated and the result was the Electrolung.

Taking the SE7EN for a spin

The nascence of recreational rebreathers was just waiting to happen. Spurred on by rapid advances in technical diving, new materials and technology, coupled with cost reductions, the allure of long and quiet dives, with vastly improved non-deco times, had to seep from the technical communities to recreational diving, leading to the design of a new generation of closed circuit rebreathers aimed primarily at recreational divers.