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3 stories for“SDI”

Solo Diving Is Either Reckless or Honest, Depending on What You Think a Buddy Actually Does

Two agencies now certify divers to dive alone, with redundant gas and a long list of prerequisites. The case for it rests on an uncomfortable observation about how often the buddy system already fails in practice.

Sep 5, 2026

Diving

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

Lebanon Dives Its Own History, Including a Vichy Submarine

A French submarine at 36 metres, a 1939 freighter at 40, and a Victorian battleship far beyond recreational limits. Lebanon's coast is a wreck list before it is a reef.

Aug 6, 2026