Within the last few two decades the popularity from the sport has grown tremendously. It is estimated there are around two million certified divers in the united states. Now even children can make limited certifications to dive using adults. Programs exist for disabled visitors to learn to dive and adults coming from all ages find enjoyment from spending a long time beneath the surface. However, in spite of the popularity risks exist. Anyone for the sport should take a nationally recognized certification course to know basic skills and safety lessons from internationally recognized scuba lessons.