“Sea nomads” can stay underwater for up to 13 minutes without breathing; how is it possible?

Members of the Bajau people of Southeast Asia may have undergone genetic adaptations because they spend about 60 percent of their day in water.

A minute underwater seems like a long time, right? Especially for those who are not used to holding their breath. But for the Bajau people of Southeast Asia, this may simply be a warm-up. Some of these so-called “sea nomads” can stay submerged for up to 13 minutes, as claimed National Geographic magazine.

The Bajau live in communities in the Philippines, Malaysia and Indonesia, often on houseboats. The individuals, who survive by fishing, have adapted and can dive up to 70 meters deep, using only swimming goggles and weights, which help them descend faster.

What happens when we dive

As soon as we dive, the body’s natural tendency is to reduce the heart rate. Additionally, blood vessels are compressed and the spleen shrinks. These are natural reactions to store energy, at a time when there is little oxygen.

Study suggests genetic adaptations in the Bajau

According to a studypublished in the scientific journal Cell, the Bajau’s high ability to remain submerged could be the reflection of genetic adaptations, due to the habits of people, who spend around 60% of their day in water.

The researchers compared the spleen size of some Bajau with those of neighboring peoples who don’t spend much time at sea. The results showed that Bajau organs are up to 50 percent larger. “Although other unknown environmental factors may explain the observed differences between the groups, genetic factors remain a possibility.” says the study.

According to researchers, over hundreds of thousands of years, the spleen of “sea nomads” may have become larger. With a larger organ it is possible to have an equally greater reserve of oxygenated red blood cells, ensuring more oxygen for the other organs.

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Source: Terra

Ben

Ben Stock is a lifestyle journalist and author at Gossipify. He writes about topics such as health, wellness, travel, food and home decor. He provides practical advice and inspiration to improve well-being, keeps readers up to date with latest lifestyle news and trends, known for his engaging writing style, in-depth analysis and unique perspectives.