Marc Edward Hay, 38, drowned while free diving without scuba equipment in Tasmanian waters. He was an inexperienced diver attempting to harvest crayfish/abalone illegally. Critical contributing factors included: an oversized weighted dive belt for his wetsuit, significant intoxication with THC, methamphetamine, and MDMA, and pre-existing myocardial fibrosis. The coroner identified no systemic failures or clinical errors. The death was fundamentally preventable through: avoiding diving while intoxicated with illicit drugs, proper diving equipment calibration, obtaining appropriate diving certification, and compliance with fishing regulations. This case underscores the life-threatening dangers of combining drug intoxication with water activities.
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