Decompression Sickness

The first clinical description of decompression sickness, or caissons disease, was made by the French physiologist, Paul Bert, who discovered that breathing gas under pressure forces large quantities of nitrogen into the body. The nitrogen stays in solution as long as...

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How Good Is Your Emergency Plan

DAN is regularly contacted by divers seeking information for their Emergency Action/Assistance Plan (EAP). Generally the information is a collection of phone numbers and contact information. Based on the experience of medical professionals, dive industry professionals...

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What a Diver Needs to Know about Scuba Diving and Flying

By Jason Blair TDI SDI Blog Most divers learn that they shouldn’t go flying right after scuba diving when doing their initial training, but few learned any more than that. However, if you plan to fly, especially in charter or personal aircraft after you have recently...

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Scuba Language

Hand signals By John Bentley – TDI /SDI Blog Do you know the feeling of gliding peacefully over a coral reef when suddenly up swims your buddy with a barrage of hand signals so fast and intense you think for a moment they may be challenging you to a shadow...

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