In February 2020 the Wet Mules diving team pushed the Pearse Resurgence cave to 245m. Further progress required overcoming the highpressure neurological syndrome and reducing respired gas density. The solution to both problems would be a light and slightly narcotic gas; properties possessed by hydrogen. In February 2023 the team successfully tested hydrogen in a rebreather dive to 230m. This presentation is the story of that adventure.

Unveiling the Deep Mysteries: Simon Mitchell 's Talk about the Breakthrough Rebreather Dive with Hydrogen!
Diving Talks, held last October 7th, gifted the diving world with an extraordinary presentation by Simon Mitchell titled "The first deep rebreather dive using hydrogen: a gateway to deep exploration?" This groundbreaking talk delved into an aweinspiring adventure that redefines the limits of underwater exploration.
The Quest for the Abyss
In February 2020, the intrepid "Wet Mules diving team" embarked on a daring journey into the depths of the Pearse Resurgence cave, pushing boundaries to reach a staggering 245 meters. Yet, further progress demanded solutions to overcoming the HighPressure Neurological Syndrome (HPNS) and the challenge of reducing respired gas density.
Hydrogen: The Answer to a Pioneering Dive
The revolutionary idea? Hydrogen – a light and slightly narcotic gas with properties that could conquer the hurdles of HPNS and gas density. Fast forward to February 2023, when Harry Harris and his fearless team made history with successfully testing hydrogen in a rebreather dive to 230 meters. This presentation unravelled the exhilarating story of their epic adventure.
Simon's talk underscores the diving community's undying spirit of exploration and innovation. It reminds us that humanity's thirst for discovery has no limits. With hydrogen rebreathers, the deep blue mysteries become more accessible, opening doors to new horizons and the wonders of the ocean's hidden depths.
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