Known as 'sea nomads', the Bajau Laut tribe have lived at sea for more than 1,000 years. Their lifestyle has given them the ability to stay underwater for very long periods of time. Travel ...

but also a unique genetic mutation - known as the 'sea nomad gene' - that also aids in their diving ability. They have extra large spleens. The tribe that evolved to stay underwater longer – BBC ...

A domestic goat from the Bakhtiari nomad tribe in Chelgerd, Central Zagros (Iran).