I don’t know if you have ever thought about it. What should we do if the diving light fails and there is no backup power supply, and what worse is that the buddy is not around? Although the chance of encountering such a thing is very small, but any small thing on the shore is not done well, and it may become a big thing underwater. Let's take a look at how to deal with it for reference only.
Don't panic and keep calm once you encounter a malfunction of the diving light. First of all, you have to determine whether you are in a rising or falling state. You can judge it according to the bubbles that are spit out. Then look around to see if there is a companion figure, or pay attention to the light emitted by the companion diving light. If you find it, you can tap your own gas cylinder to attract his attention.
If you find your buddy, be sure to approach him slowly. Once you quickly get close to shoot him, it will definitely cause the partner's panic and lead to accidents. If you do n’t find your teammate ’s figure, do n’t hesitate to go upstream, because the loss of the diving light is equivalent to the lack of eyes under the water. Unable to explore is more dangerous. So make a judgment in a short time, and choose to surface after looking upstream.