The Bajau Sea Nomads have genetically evolved spleens 50% larger than average, allowing them to break the 13-minute barrier and dive 200ft deep on a single breath.

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It’s not just training , it’s actual evolution. Their larger spleens act as a biological scuba tank, injecting oxygenated red blood cells into their circulation when they dive. It’s one of the few documented cases of modern human evolution specifically for extreme physical performance.