Oxygen Toxicity Suspected in Maldives Scuba Diving Deaths of Five Tourists

Five Italian tourists died during a scuba diving expedition in a deep-water cave in the Maldives, marking the country's worst single diving incident. Officials are investigating the cause of the tragedy, with experts suggesting that oxygen toxicity may have played a significant role. The divers were on a 160-foot dive when they failed to resurface. Pulmonologist Claudio Micheletto explained that breathing high concentrations of oxygen under intense pressure can lead to central nervous system toxicity, causing symptoms like seizures, disorientation, and loss of consciousness, which would make surfacing impossible. The victims included marine biology professor Monica Montefalcone and her daughter Giorgia Sommacal, along with three other Italians. The article details the mechanisms of oxygen toxicity, distinguishing between pulmonary damage from long-term exposure and acute neurological effects from deep diving. It highlights how increased pressure underwater makes oxygen more potent and potentially toxic, especially if specialized gas mixes are not carefully managed. This incident has drawn attention to the hidden risks of deep-sea diving beyond common hazards like currents or equipment failure.