I think that all the movements of diving are second. The most important thing is to personal psychological quality, as long as you have a panic, I will fail, I use 1/3 second to adjust my own mentality, forget my own "nose", start breathing with the breath in the mouth. Everything in underwater will be sentenced to "death penalty". Although there is a special "myopia" diving mirror, I still often look at the following, I don't care, I have found that my head has been drilled to a reef hole, very embarrassing, but everything needs cool, underwater People can help you.
There are a lot of lower fish, but you can't catch it. There are a lot of shells, but unfortunately I have only one hand, and another must be reported to the coach to report their own situation (with gestures). Later, the coach found that I didn't ask me if I didn't ask me, I was so self-caught. Underwater time, when I found that the breathing of the gas cylinder is a bit state, the coach has pulled me to the water, I breathe too fast, when we returned to the water, several speedboats have been in the water, etc. We, it turns out that we don't know, the potential is too far, the time is too long, everyone has on the shore, rest, ready to return. I accidentally be a first. Ha ha
