How to save yourself if you accidentally fall into the sea?

On July 5th, two cruise ships carrying tourists from China capsized in Phuket, Thailand. Up to now, the number of tourists killed in this incident in China has risen to 16, and 78 tourists from China have been rescued. The rest of the missing persons are still searching.

Some netizens replied in Weibo's comments that they were visiting Phuket at that time, but they didn't go sightseeing on the boat, and the scene was in chaos.

For people who fall into the sea, drowning can happen whether they wear life jackets or not. After all, life jackets may be damaged in the capsizing process, and on the other hand, the swirling flow in the waves in heavy rain can not be underestimated.

When the seawater is drowned, because the salt content of seawater is 3.5% and the osmotic pressure is high, the liquid in the blood permeates into the alveoli, so that the alveoli are filled with bloody viscous liquid containing protein, and it is extremely difficult to breathe.

Salts in seawater can quickly enter the blood. In about 3 minutes, the blood sodium content increases by 2/3, the blood calcium content increases by 1 times, and the blood magnesium content increases by several times, causing serious electrolyte disorder.

For those who can't swim, the first task after falling into the water is to "protect breathing". You can remember the following self-help measures first:

Don't be nervous after falling into the water, keep your head clear and don't struggle hard in the air, which will make it easier to sink.

The correct posture is: relax your body, take a posture with your head back and your mouth up, and expose your nose and mouth to the water to breathe;

In this process, exhale shallowly and inhale deeply, and let your body float on the water as much as possible to wait for the rescue of others;

In addition, if swimmers fall into the sea in stormy weather, if they are far away from the cruise ship or the ship is unstable, it is not recommended to swim back directly for help. Under the condition of ensuring your own safety, save your physical strength as much as possible, keep a steady breath and wait for the rescue of others.