The history of scuba diving is very interesting. Many civilizations throughout time have engaged in breath-hold diving, also known as free-diving. The evidence of early free-diving is the finding of sea items found on land and ancient pictures of divers. These civilizations used free-diving to spearfish and also in competitions. The Ancient Greeks are known free-divers. They used free-diving to hunt for sponges and also in their military.

Some of the early attempts in the history of scuba diving to dive with the use of air include snorkeling with hollow reeds, using air-filled bags and diving bells. Diving bells are watertight chambers on cables. The diving bell is designed to remain full of air as it is pushed under water, allowing a few divers to be transported. These methods were not very efficient, however, and did not nearly resemble scuba diving as we know it today. The reeds did not allow divers to go deep into the water and air-filled bags soon filled with carbon-monoxide as the air was exhaled. Diving bells did not allow the divers much mobility.

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Wet suits are chosen on the basis of thickness, the quality of the seal, the type of neoprene and the quality of the knee pad. Buy a wet suit that is appropriate for different types of scuba diving with tips from a scuba instructor in this free video on scuba diving.

Expert: Gregg Eddy
Contact: www.flatironsscuba.com
Bio: Gregg Eddy is a certified scuba instructor who has been teaching scuba classes for over 10 years.
Filmmaker: Clay Roberts

Duration : 0:1:56

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Great Lakes Dive Locker 616-531-9440 http://www.yellowbook.com/profile/great-lakes-dive-locker_1821968193.html

Duration : 0:0:36

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Communicate underwater when scuba diving by using hand signals to tell diving partners if things are OK, if you are out of air or if you’ve seen an animal. Find out the hand signals for different phrases when scuba diving using information from a scuba instructor in this free video on scuba diving.

Expert: Gregg Eddy
Contact: www.flatironsscuba.com
Bio: Gregg Eddy is a certified scuba instructor who has been teaching scuba classes for over 10 years.
Filmmaker: Clay Roberts

Duration : 0:1:39

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Refill a scuba cylinder for diving by determining what pressure to fill the tank to, closing the bleed valve and then opening the main valve to let in air. Use a compressor system to fill scuba diving cylinders with instructions from a scuba instructor in this free video on scuba diving.

Expert: Gregg Eddy
Contact: www.flatironsscuba.com
Bio: Gregg Eddy is a certified scuba instructor who has been teaching scuba classes for over 10 years.
Filmmaker: Clay Roberts

Duration : 0:1:36

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