1. Dive within your limitations. 2. Relax while you dive. 3. Have positive buoyancy at the surface.
There are many definitions of surface diving. The most common is to go from the surface and dive to the bottom. Some people think it is different.
You would most likely see a diving board over a pool of water that is infested with sharks.
Competitive diving is when an athlete participates in competitions in the area of springboard diving. There is spring board diving, which is done on either a one meter or a three meter diving board. Then, there is platform diving, which is most commonly done on a five meter, seven meter and ten meter. Diving is a competitive sport practiced in the Olympics, where they do both springboard and platform diving.
Tornadoes and hurricanes.
capsizing
capsizing
Buoyancy control is one of the most important skills you will have to master as a scuba diver. On the surface while entering the water you do not want to be too heavy that you will sink while on completing your dive you have to maintain proper buoyancy control so as not to surface prematurely
the most common emergency is mostly robberies and crashes
diving
Diving animals as in.. diving into the water? Hm.. I would say a whale, or a dolphin. Most marine animals are known to dive down into the depths of the ocean.
No, Vatican City has no major hospitals and most medical emergencies are taken care of at hospitals in Rome.