You can play. . . There are security measures there. You can rest assured. Diving instructions 1, in good health, can participate from 6 to 60 years old. 2. Anyone who can swim or not can participate. 3. You can't engage in diving activities after being drunk. People with heart disease, asthma, hypertension and otitis media can't take part in diving activities. Never use earplugs when diving. 6. Follow the coach's peer system. 7, eye myopia can choose a diving mirror that is similar to your myopia. 8. Several gesture languages that must be mastered when diving: OK, ascending, diving, uncomfortable, poisonous creatures, please do not touch. 9. Learn the back pressure method. When diving, because of the pressure of water, you will feel your ears hurt when you dive to a certain depth. When you do back pressure, the pain will go away. Back pressure method: hold your nose from the mask and block your nostrils, then inhale hard and hear the sound of "pop". Air is injected into the ear canal, and the back pressure is successful. Or swallow saliva, it can also balance ear pressure, improve human heart and lung function, and enhance the strength of major muscle groups. Because diving breathing is compressed air, oxygen molecules can penetrate into the skin better through the flow of blood, accelerate the metabolism of the skin and beautify the skin from the face; Because people consume more calories in water than on land, diving has also become a good way to lose weight and cultivate team spirit. Diving can exercise people's psychological quality, let people learn how to face unfamiliar environment and enhance their ability to cope with crises and emergencies. Divers and diving instructors, regardless of their level, must strictly abide by the diving companion system and cannot dive alone. Divers must look after each other and help each other. You can go to GO- Sanya on Taobao for a special holiday. You can travel to Sanya to have a look. The service is good. GO- Sanya is on holiday, and the owner's name is GO Sanya.