Mutated tribe can swim to bottom of ocean after developing 'sea nomad gene'
Indy100 • • health
Key Points:
- The Bajau tribe of Indonesia has been identified as the first known humans to genetically adapt to diving, possessing a unique mutation that results in larger spleens which enhance their underwater endurance.
- Living a highly amphibious lifestyle on houseboats for over 1,000 years, the Bajau spend up to eight hours a day diving and can reach depths of 230 feet using minimal equipment.
- The enlarged spleen helps by releasing oxygenated red blood cells during dives, increasing blood oxygen levels by up to nine percent, a trait linked to elevated thyroid hormone levels.
- This adaptation is similar to deep-diving seals, and research suggests the spleen size is influenced by thyroid hormones, as demonstrated in animal studies.
- Despite their remarkable abilities, the Bajau face challenges such as difficulties in obtaining citizenship and threats to their food supply from commercial fishing, endangering their traditional nomadic lifestyle.