Diving is defined as an underwater activity. People dive into the water, actually moving underwater. So as to achieve the purpose of physical exercise and leisure and entertainment, and leisure sports are widely loved by the public.

The definition of swimming is the skill that people float upward under the buoyancy of water and make their bodies move regularly in the water by virtue of buoyancy.

Second, the accessories are different.

diving equipment

All the equipment that divers wear and hang when they go into the water is also called diving personal equipment. There are two kinds: heavy and light.

There are helmets, gas pipelines, communication cables, telephones, diving suits, lead-pressed diving shoes, etc.

Light masks (light helmets are also available), gas pipelines, communication cables, telephones, emergency gas cylinders, diving suits, waist lead, boots and flippers, etc.

Swimming parts

1, swimming trunks: men generally wear swimming trunks, naked, and a few people swim naked; Women usually wear swimsuits. A bathing suit must fit. If it is too big, it is easy to bring water when swimming, which will increase the weight and resistance of the body and affect the swimming action.

2, swimming cap: wear a swimming cap when swimming, especially for women, to prevent messy hair. Sometimes poor water quality will prevent hair from turning yellow. The swimming cap should be made of elastic nylon or rubber, not too big, or it will fall off easily.

3, goggles: If the water quality is not clean, bacteria can easily enter the eyes when swimming, causing pinkeye. In order to prevent eye diseases, you need to wear swimming glasses to swim. For beginners, wearing swimming glasses can also correct the problem of being unable to open your eyes in the water.

4. Earplugs: It is inevitable that water will flow into your ears when swimming. Water is very uncomfortable after entering the ear, sometimes causing pain and affecting hearing. To prevent water from entering the ears, earplugs should be provided.

5. Floating objects: Beginners should bring some floating objects, such as lifebuoys (clothes), foam plastics, buoys, paddles and floating sleeves. However, when carrying these items with you, always check whether the life jacket and ring are leaking to prevent accidents.

6, bath towels, slippers: bath towels and slippers are essential supplies for swimmers. When swimming or going ashore after swimming, you can dry your body with a towel, put on a bath towel and put on slippers, which can not only keep warm, but also prevent colds and be more hygienic. In winter swimming, it is even more indispensable.

7. Nose clip: When swimming, water waves often flush water into the nostrils, causing coughing, especially for novices. In order to prevent water from entering the nostrils, it is best to prepare a nose clip, which can be forcibly inhaled through the mouth instead of through the nose to avoid choking water.

8. Spare clothes and pants: in case clothes and pants get wet by water.

Third, the precautions are different.

Precautions for diving

1, keep communication. In the process of diving, do a good job of communication with divers and companions. Effective communication better ensures the diving process.

Don't dive in strange waters alone. Never do it alone, because if you don't know the sea, there may be many hidden dangers. If you do it alone, it is easy to cause irreversible consequences.

Don't touch it casually. When you see an oncoming turtle at the bottom of the sea, you may want to get close to it. Swarms of corals and lovely tropical fish will also make you curious to reach out and touch it. However, such behavior is basically not allowed.

4. Don't do hyperventilation, and then take off the frog shoes, mask and breathing tube after coming out of the water completely.

Precautions for swimming

1, people who are sick should not go swimming. Patients with chronic diseases such as otitis media, heart disease, dermatosis, liver and kidney diseases, hypertension, epilepsy and pinkeye, as well as those with colds, fever, mental fatigue and physical weakness, should not go swimming, because these patients are not only prone to aggravate their illness, but also prone to cramps, accidental coma and life-threatening.

2. After taking part in strong physical labor or strenuous exercise, you can't jump into the water to swim immediately, especially when you are sweating or fever. Otherwise, it is easy to cause cramps and colds.

3, cold, illness, physical discomfort or weakness, after meals, fasting, drinking alcohol is not suitable for swimming.

4. Polluted (poor water quality) rivers, reservoirs, places with rapids, the intersection of two rivers and lakes with gaps are not suitable for swimming. Generally speaking, all rivers and lakes with unknown water conditions are not suitable for swimming. Bad weather such as thunderstorm, strong wind and sudden change of weather is not suitable for swimming.

It is best to experience the water temperature before entering the water. If the water temperature is too cold or too hot, try not to rush into the water. The temperature of the pool water has an influence on blood circulation, heart, blood pressure, respiration, metabolism, human skin and muscles.

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