Most of the scuba divers use flippers. Flippers are fin like enhancements that are attached to the feet of the divers that helps them to propel easily in the water. There are other diners that use ?scooters? which are propulsion devices. Scooters use propellers that help the divers to pull through water. Scooters can allow the divers to go deeper in to the water, most of the tomes these are used for rescue diving.

In order to begin scuba diving it is important that you are in good shape, most of the times you will not be allowed to pursuing diving if you are declared unfit or not in proper shape. There are also other modes of diving apart from the two that have been mentioned above. This specialized type of diving requires training that goes beyond the training that is required for open water or for recreational diving.

Technical diving.

Tech diving is any diving in which the diver goes deeper than 30 meters in the water. Technical diving is also nay diving in which the diver does not have access to any open surface water, such as in a cave or under the ice. Here we have a list of diving that is considered to be technical diving.

Deep Diving.

Deep diving refers to different depths depending on the type of diving that one is undertaking. In the case of recreational diving a depth of 30 meters is considered to be a deep dive. On the other hand in the case of technical diving, a depth of 60 meters is considered to be a deep dive. In case of surface supplied diving anything that is beyond 100 meters is considered as deep diving. Surface supplied diving is one where the diver is supplied with a gas mixture for breathing. This gas mixture is passed o through an ?umbilical tube? which finds its mixture supply from the boat on the surface.

There are a lot of dangers that are associated with deep water diving, and for the same reason there are a lot of other procedures that are involved.

Divers need different gas mixtures at different depth of water. This is essential because of the way that gases compress under different pressure. It is unsafe to take in natural air at a depth of more than 40 meters because it can lead to nitrogen narcosis.

Nitrogen narcosis is a stage that is similar to intoxication. In this state a diver feels a bit goofy, he might find it difficult to concentrate, there may be loss of focus and also in case of more significant effects it can also lead to severe and permanent damage. While this is a possibility, in most of the cases nitrogen narcosis is reversible and it causes no permanent effects.

While doing deep diving, it also becomes essential to use more of decompression stops because of the way the gas behaves under pressure, many times the nitrogen forms bubbles in the divers blood stream, it thus becomes necessary to wait at different levels to allow the gas to escape through the lungs of the diver.

Wreck scuba diving.

Wreck diving is a very exciting form of scuba diving, it involves going down to the wrecks of ships and boats and also airplanes that somehow get stuck under water. It is really very exiting and mysterious going down to the wrecks and this mystery attracts a lot of divers. There is also a lot of marine life habitat in the wreck, as it provides a kind of artificial reef. Wreck diving is more challenging than the other forms of diving and more experienced divers are more fascinated and also suited for it. It is extremely important that you never wreck dive alone, no matter the experience it is a must that you carry with your self a partner, the reason is that most of the wrecks are not stable, in case something shifts and you get hurt, you would need a partner to help you out.

Archaeological scuba diving.

Some archeologist train as divers and there are also cases in which divers train ass archeologists. The reason why archeologists turn in to divers is that they can themselves discover under water evidence for their research and study. Sometimes archaeological diving includes exploring wrecks but there are many times that entire villages that were on the shore of oceans and larger water bodies get submerged in the water , archeological diving also includes exploring these bodies. An example of such bodies are the villages that existed on the shore of the Black sea around 2000 years ago, which are completely submerged in water. To work on an under water archeological project you will be required to have knowledge in both scuba diving and archeology. In case you are aiming to doing at a normal archeological site, the a little bit of informal training will do.

Cave scuba diving.

Diving in cave is a very challenging job and it is this challenge that makes people go for it to enjoy the thrill of exploring a place that very few humans have ever dared to explore. Although there are frequent reports of death and injuries of cave divers, still the more experienced divers believe that these repots consist of people who are inexperienced and not properly trained for cave diving. Cave diving is only suited for people who have the right expertise, nay one who is not experienced and no trained should never try their hands at it.

There are many challenges that you face in case of cave diving. First and foremost there is a ceiling that stops your immediate escape in case of an emergency, although as you go deeper and deeper in to the cave, it becomes darker. There are also strong currents in the cave because these caves generally leads to natural springs it is not all due to sand and slits visibility becomes almost negligible in the cave. It is very easy to get disoriented in the cave in te dark and for this reason divers carry with them a rope that indicates the direction from which they had come, so that they can get back safely.

Ice scuba diving

Ice diving is very exciting too, but here the main challenge is facing the cold. It is the only diving where it is recommended not to have a partner along with you in the water, in this case, the diver who enters the water is toed securely to a rope and the other end is with the partner who is on board, the other partner at boar should be ready to plunge in to the water and pull the diver n case he succumbs to the cold. It is essential that you have rescue diver who is ready to help the diver in case of ice diving in case such a situation does arise. There are a few special equipment that you will need in order to be able to be ready for ice diving. You will need a cold water dry suit, gloves, hood and at times a full mask. Also you will need a special regulator that will not freeze in the cold and a shovel to clear the area of the snow and a chain saw to cut through the ice.