No, you don't need a certain body type to Scuba dive. Because you use flippers to SCUBA dive, you can be a very lousy swimmer and learn to SCUBA dive. You may look stupid with a very tight wet suit during scuba diving, but you can dive. When I got certified, I learned that you have a very slightly higher chance of the Bends during scuba diving, but this is a small percentage. The pros of scuba diving outweigh the cons.
What is the percentage of body weight to weights used in scuba diving?
Streamlined scuba is just a term used for a diver who has all their gauges and equipment close to their body so they are not harming the environment around where they are diving. Commonly clips are attached to the BCD for easy access to gauges while keeping them close to your body.
One possible answer involves a forest fire and a very charred scuba diver. During a fire a water carrying helicopter collected water from the sea in order to extinguish it. However the helicopter also picked up the scuba diver, in the sea water, and the diver was killed when he was dumped in the middle of the fire, most likely from a high altitude.
Mass (weight) of medicine/Mass (weight) of body.
Monofins can have advantages in swimming efficiency for freediving. Monofins are also commonly used in underwater orienteering, a scuba based sport where fast swimming is essential. However, divers in this sport hold the scuba tank in their hands in front of them, not in a harness on their back like a recreational scuba diver. When the tank is worn on the diver's back, it interferes with the traditional monofin's function in a way that tends to negate the fin's advantages. Furthermore, a traditional monofin will induce body pitching that will sometimes result in the diver getting hit on the back of the head by the tank valve. A new type of monofin that uses a hydrofoil instead of the traditional flexible fin blade has succeeded in solving these issues and can be used with standard scuba equipment. Little to no body-pitching, and very efficient thrust production solve the monofin issues with scuba and provide advantages over bi-fins for swimming speed and reduced air consumption. See here the DOL-Fin X-15 monofin being used with scuba. See the related link for further information.
The human body is naturally positively bouyant, as is much of the gear that a diver wears. Wearing a weight belt (which is basically just a nylon belt with lead weights on it) gives a diver the necessary negative bouyancy to overcome that positive bouyancy. A diver without a weight belt would not be able to swim down more than 2-3 feet, and would constantly pop back up the surface. Some divers actually have 'weight integrated' systems, rather than using separate stand alone weight belts. But the basic concept is still the same.
If you are scuba diving and then suffered from a heart attack, initially your body would sink to the bottom due to the diving equipment, the weighted belt, and other items. After death as your body starts to decompose it would bloat, filling up with gases, and depending upon how heavy the equipment and the weight belt that you were wearing, this would most likely cause your body to float partway to the surface, or fully to the surface depnding upon if the gases released by your decomposing body are sufficent enough to counteract the weight of any and all scuba equipment you are wearing or carrying.
A diver is able to endure the pressure at 102 feet underwater because the pressure of the water at that depth is counteracted by the air in their body and in their scuba tank. The diver's body is able to equalize the pressure through gradual changes in depth and breathing techniques. Additionally, diving equipment such as a wetsuit or drysuit provides some protection against pressure changes.
A helicopter can't do that, but a diver can.
Yes there are min height weight requirements
Usual dose is the term refers to " customary dose for body weight." so Answer to Q. : it is called "Usual dose."
Scuba stands for Self Contained Underwater Breathing Apparatus. It uses two regulators, one on the bottle which takes the volume of compressed air to a manageable rate, then the second regulator takes the air to a breathable rate so the diver can breath the air comfortable. The other part of diving is a divers buoyancy. This is controlled by using a hose which comes from the first stage regulator into a vest called a B.C. (Buoyancy Compensator). The goal of this device is to get you, the diver as close as possible to becoming neutrally buoyant (you don't go up or down, you just stay in the middle). However once neutral buoyancy is achieved it can still be affected through your breathing rate. Gregory L. Las Vegas, NV (D.I.T.)