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5 stories for“oxygen toxicity”

Oxygen Toxicity: The CNS Risk Behind Technical Gas Choices

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

Diving

Nitrox Buys You Bottom Time and Costs You Depth, and It Will Not Make You Less Tired

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

Diving

IANTD: The Agency That Made Nitrox Respectable

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

Diving

The Open Water Certification: What It Does and Does Not Qualify You For

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

Diving

The Path Into Technical Diving: What Changes at Depth

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