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13
2019-11

Diving fins are propulsion devices, buoyancy controllers and stabilizers. How do we use them?

Your fins are propulsion, buoyancy control and stabilizers. They are also good quills or precision instruments when you need them. In some cases, they can even be large brushes and powerful tools. Your fins are like the gearbox of a car. They can not only help you speed up, slow down, stop and reverse, but also help you control the car. It's all your fins can do. In scuba diving, your hands and arms are only used to convey information, but when you don't have much to express, they are usually kept away.



Good diving skills demonstration




It's not a strange convention, and it's not just that your hand swings at random can interfere with other divers, or damage the fragile ecosystem of the place you pass. Put your arms away, the main purpose is to make you more streamlined in the water. This will reduce the amount of energy you need to swim in the water, thereby reducing the amount of air you use. Reducing air consumption means that your air supply can last longer.




At the same time, scuba diving is different from walking steel wire. Waving your hands and arms underwater will make it more difficult for you to keep balance. As I said before, diver balance mainly comes from buoyancy control.




Learning how to kick better requires concentration and a lot of effort. Many people will find that they need to move their leg muscles in ways they've never used before. Unfortunately, early diving training didn't include a lot of time for fin kick training. That's why I suggest new divers do some kicking exercises before starting scuba diving classes. I've also given several different kicking techniques in the chapter "snorkeling tips" in this book, and you can practice them.




Every kick must be conscious and purposeful. Often, even experienced divers let their fins reflect their condition. The importance of observation made me realize that the reason why a diver may encounter danger is the change of her fin posture. The hallmark of an anxious diver is that his legs and fins move aimlessly. Just as their legs reflect the chaos in their brains.