The diving is an activity that, unlike the swimming and snorkeling provides the complete immersion of the human body in a liquid environment. The chance to explore the underwater environment stems from the peculiar characteristic that humans share with a few other mammals to be able to breathe in water (reflected immersion). The first dives were in fact related to apnea and need food, over time, and especially since the war to the needs of nature, are designed tools that enable man to stay longer under water, were then developed several equipment that had resulted in the further spread of the practice of diving beyond the military sphere. To date, diving meets a very wide spread and is sometimes considered activity within the reach of everyone. The spread of can not, however, ever fail to respect the safety rules, the knowledge of the physical laws that govern it and the knowledge emergency procedures.
0 comments:
Post a Comment