Scuba

You could use a monfin for scuba. This is illustrated in the film the Big Blue but generally monofins are only used for free diving. There is a good reason why SCUBA divers a fin on each foot and why they are generally moderate in size. Normal fins give you a lot of control in the water. Swimming with a monofin gives you a very limited in finning technique which might cause a lot of practical problems unless you just want to swim.

This is because ocean water has weight, and believe it or not, air has weight too. The water and air pressure add up when you go farther underwater. This causes there to be higher water pressure as you go deeper because the water weight adds up.

According to the sport governing body (AIDA) Austrian freediver Herbert Nitsch in Greece June 2007 reached 214 metres. Herbert Nitsch holds world records in 5 of the 8 free dive disciplines. See the related link below.

The Blue Hole was caused by the roof of an underwater cave collapsing. The water surrounding the opening is relatively shallow, but the floor of the cave is over 400 feet deep. A typical dive starts by descending along the wall of the collapse to a depth of about 130 feet where you can then swim around the stalactites hanging from what was the ceiling of a once dry cave. The stalactites are huge, but relatively unimpressive, and the depth means you spend your time plastered to the ceiling. Gray rock with little natural light and no coral (not enough water movement) makes this a been-there-done-that dive in my book.

Bottom time goes fast as does your air at this depth, so back up past more boring rock until you reach the sandy bowl of the crater's bottom to finish your safety stop. If you go to Belize to go diving, you almost have to dive the Blue Hole, but if you're like me, it won't be on your "must do again" list.

Technically Never. There is no requirement set from the agencies.

Sensibly speaking it depends on they type of diving you intend to undertake. Under most circumstances if someone is intending to dive without the presence of a dive master or instructor and has no dives in the last 14 months refresher dives are recommended.

The pressure of a fluid generally increases with depth. This therefore means that at a specific depth the pressure of a fluid is constant.

Of course it depends on the depth, but the maximum is 219 minutes at 10.5 meters.

Yes. Without a licence and training, filling a tank by yourself is dangerous.

system if Algeria

Dissolved nitrogen and nitrogen narcosis

There is the extension phase where you reach out as far as possible. Then the catch phase is next its where you initially catch the water then it leads right into the actual pull phase where the water is thrust behind you. which leads directly into the recovery phase of the stroke where the arm moves back to catch more water and start the cycle again.

Diving accident victims are placed in a hyperbaric chamber primarily to treat decompression sickness, also known as "the bends." This condition occurs when nitrogen bubbles form in the body due to rapid ascent after deep diving. The hyperbaric chamber increases atmospheric pressure, allowing the nitrogen bubbles to dissolve back into the bloodstream and reducing the risk of tissue damage. Additionally, the chamber can enhance oxygen delivery to tissues, aiding in recovery from injuries related to diving.

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you can poop your pants and eat it.

Key Largo, in the Florida Keys, is known as the Dive Capital of the World.

some wetsuits are white, quicksilver make one ,so do rip curl

Yes, it just has to be empty. I think shipping companies like you to remove the valve first. At that point, it's just another heavy piece of metal.

as soon as your doctor says its okay to (remember to ask him because if you still are recovering in any way it can add danger to scuba diving)

Jacques Yves Cousteau and Emile Gagnan worked together in 1942 and created the first SCUBA unit.

The dive computer essentially calculates in real time the nitrogen levels in your blood used on depth and time (and possible air mixture: ie: NITROX 32%) - they can (and do) much more than that including, timing your dive, ascent rates - some even calculate time left based on how much gas is left in your tank!!!

Technically speaking this has no relevance to the quality or action of diving. It is not a formal signal of any status nor skill level.

In the social context of the dive community it is taken as a sign that the Diver in question is less experienced as this action is one of the most common ways to loose a mask.

(www.scubaboard.com has many references to this practice)