Why can a marine gypsy maintain good eyesight underwater?

Let's start with the following points to understand how marine gypsies maintain good eyesight underwater.

1.What is a Gypsy of the Seas

The Gypsies of the sea, who live near the west coast of Thailand, are nomadic peoples, but they live by preying on seafood. The vast majority of their lives are spent adrift at sea. Every child is born at sea.

They were able to learn to swim before they could talk or walk. They can easily dive 30 feet below the surface without using any equipment – there is a tribe called Sulu, who often dives 75 feet to fish for pearls. They are able to manipulate and lower their heart rate, and in turn, their oxygen consumption, and they are able to stay underwater for long periods of time, often more than twice as much as the average person.

2.The eyes of a gypsy of the sea

They are able to persist in outstanding and even better eyesight underwater. Mainly because they learned how to manipulate their pupil size, they were able to reduce their pupils by 22%. Traditionally, it has been assumed that the scale of pupil contraction is fixed (determined by human genes) and that it should be uncontrolled by cognition, subject to the "autonomic nervous system".

3.We can do the same

Scientists believe that this is not the result of "genetic mutations", but rather the "plasticity" of the brain. As scientist Anna Gislen and her companions brought marine gypsies to Europe, they soon taught a group of Swedish children how to constrict their pupils. Scientists now believe that the brain is extremely malleable, and that it has always been so malleable.

All external influences (especially the training of the system) will have an impact on our brain, and the structure of the brain will also change. <

It can be seen that the reason why marine gypsies can maintain good vision underwater is not that they have any special functions or genetic mutations, but that they are the first to develop the ability to change the pupil compared to us. So we have to believe that our brains are still extremely malleable.

Because they swim in the sea all year round and don't use goggles, they can maintain good eyesight.

Because they have lived collectively in the sea since childhood, their eyes have changed accordingly in order to adapt to the environment.

Probably because the marine gypsies are used to seeing clearly in the seawater.

Because of the results of long-term exercise, this is a special ability of theirs.

Because because the gypsies practiced the ability to see underwater at a very young age.

Because they learned how to control their pupil size, they were able to reduce their pupils by 22%.

This may have something to do with their genes, or maybe their eye genes are different from others.

Marine gypsies are exposed to this exercise from an early age. This is the foundation of their survival.

The marine gypsies live off the west coast of Thailand and are nomadic, but they live by preying on seafood. The vast majority of their lives are spent adrift at sea.

They have no nationality and are known as sea gypsies, and their eyes have evolved to be different from ordinary people when they catch fish all year round.

Marine gypsies can maintain good eyesight underwater because they already have the usual eating habits, and some exercise usually, especially for the special attention done for racing under the ocean.

Because humans are extremely adaptable to the environment, for example, when you are in the dark for a long time, your sense of hearing will become developed, and the same is true for marine gypsies.

Because such people have grown up in such a place, they have developed very good swimming skills, and they have special skills to maintain their eyesight, and they have become accustomed to this method.