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10 stories for“nitrox”
Enriched air extends no-decompression limits at recreational depths by reducing the nitrogen you take on. It also imposes a hard ceiling on how deep you can take it, and the claim about post-dive fatigue has never held up.
Sep 5, 2026
In the late 1980s, teaching recreational divers to breathe enriched air was close to heresy. IANTD taught it anyway, then built the trimix and rebreather syllabi much of technical diving still runs on.
Aug 12, 2026
Oxygen keeps divers alive, until pressure turns it toxic. Here is why central nervous system oxygen toxicity shapes every gas decision in technical diving.
Sep 10, 2024
The standard aluminium 80 is negatively buoyant full and positively buoyant empty, which is why safety stops go wrong at the end of a dive. Steel behaves differently, and the valve and testing rules differ too.
Sep 5, 2026
Older than PADI, structured as a non-profit membership association, and built on a principle almost nobody else uses: the instructor may exceed the standards, and is expected to.
Aug 12, 2026
Global climate change may be the most significant problem ever faced by humankind. Global climate change, also called global warming or the greenhouse effect can convey mild or gentle warming, however, a rise of just a few degrees in the average temperature of the earth can result in large-scale regional weather patterns. Global warming is
Aug 19, 2023
The agencies argue endlessly and the accident data barely distinguishes between them. Here is what genuinely differs, what does not, and the questions to ask a dive centre before you pay.
Aug 13, 2026
The world's largest training agency is also the most argued about. Setting the snobbery aside, here is what a PADI course actually mandates, where the flexibility sits, and what the card does not cover.
Aug 12, 2026
An Open Water card opens the door to diving worldwide, but it is a narrower licence than most new divers assume. Here is exactly what it covers.
Sep 9, 2025
Technical diving begins the moment a diver can no longer go straight to the surface. Here is how training builds toward that shift, one course at a time.
Dec 5, 2025
