Becasue if a SCUBA diver didn't go underwater, they really wouldn't be a SCUBA diver. SCUBA stands for Self-Contained Underwater Breathing Apparatus.
Then he wouldn't be a scuba diver since he wouldn't have his breathing device.
Well, it needs oxygen like a human scuba diver but it lasts a pretty long time underwater just like a human would if he used an oxygen tank.
scuba diving.... the diver would equalize the pressure between his ears and mouth..
Free divers do but scuba divers do not need to. Scuba divers take their air with them and would have no need to hyperventilate.
As the diver ascends to the surface the external pressure decreases. If the air in the lungs were not exhaled, the volume in the thorax would expand, and the diver's lungs would explode.
16 Feet
Scuba divers.
Currents have a disproportionately greater effect when pushing water against a scuba diver than wind does when pushing air against a person above the surface. This is for two reasons: firstly, water is much more dense; secondly, a diver swimming has less propulsion than a person walking (ie. you can walk faster and with less effort than you can swim). I am not aware of any scientific formulae comparing the two, but I would compare swimming into a two knot current wearing scuba gear as the rough equivalent to trying to walk into a windspeed of approximately 30 knots.
A toxic condition called nitrogen narcosis affects scuba divers who venture to the depth of 30m. It can result in death!
form_title=Scuba Diving Lessons form_header=10923 Who will be getting these lessons?*= () Junior (At least 10 years old) () Teen (Middle / High school) () Adult "Specifically, what type of instruction are you looking for?"*= () Private (1 student) () Private couple (2 students) () Group / Class Up to what level can you dive?*= () Never tried () Intermediate () Beginner () Advanced How would you describe the certification that you are interested in?*= [] Open Water Diver [] Advanced Open Water Diver [] Rescue Diver [] Divemaster [] Other [] Not sure
The name Open Water course is pretty much standardized in the industry for the beginning level course. But there are still some "lower level" courses (sometimes called a Scuba Diver course) in addition to the Open Water course. Just see which one give you more dives. You should get 4 to 5 scuba dives in your course with a possible skin dive which is often optional, but in general the Open Water course is considered the better and more complete course.