This page was last updated on: December 15, 2003
Ch. Vaikouzis Instructor 2* CMAS |
Sea and Diving |
The sea is considered the first life-giving thing since the first live cell which advanced and ended up into human being , started there. However , for thousends of years and for most human beings it started and finished on the surface. Only in the last two centuries the great beauty which is hidden under the surface was revealed and man found himself in a new magic and fascinating world , free from the influence of gravity. Of course this world does not differ much from our natural environment but in order to move comfortably and without any danger within it, man must be trained in a new way life which is dominated by completely different rules and laws to ours. Anyone can once put on a mask and look under the surface of the sea. And especially when someone returns to the surface after his first scuba diving , he will have realised that nothing in the world is more attractive. Scuba dives cuts us off completely from the surface world and carries us straight away to another planet. Skin dives offer us the same amazing view at a lower cost and they can last for hours in contrast to scuba diving which seldom last longer than an hour. However, with scuba diving we can dive at greater depths , except if someone is champion in dead calm. In skin diving , the common dives , man leaves the surface under his natural living conditions. He reaches a small or great depth , experiences the influence of the highest pressure and within a very limited time that his strength allows him in holding his breath , comes to the surface again to meet with his natural envinro- nment. Things differ in scuba diving. But of course and in this case man leaves the surface under the same natural living conditions. Going down towards the seabed, creates new , always natural living conditions, which are adjusted according to the depth he is at any moment. At 10 , 20 and 30 metres the air he breaths has pressure of 2 , 3 and 4 at (bar). Every contact with the surface has substantially been cut off. The surface is not for him anymore a natural situation , this known beloved world to which he will turn to in case something unexpected happens. To come to the surface he must follow with wisdom a way of gradual re-adjustment. The development of the technique of scuba diving was based on physico-chemical anatomic and natural facts. A lot of these have a conection with medicine. But this doesn 't mean that their knowledge must be limited to doctors. Whatever happens at 20 or 30 metres , it will not be easy to call a doctor to deal with it. On the contrary the scuba diver must know more from a non-specialist doctor. It is common sence that in order to take up diving one must be fully aware with this data, because otherwise he will put himself in danger. Finally we are not talking about another sport among others or marely for a hobby but for a pasion ! In spite of all the above mentioned we must always keep in mind that man at the seabed is not in his natural environment and he could be confronted as intru- der and sometimes not wanted and strange in the sea kingdom,(animal and plant). So we must treat this attractive , magic and beautiful sea world with respect. |
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