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Types of Recreational Underwater Diving. Recreational diving or sport diving is a type of diving that uses SCUBA equipment for the purpose of leisure and enjoyment. There are many types of scuba diving and Philippines is blessed to have the great places for almost all of them. Cavern diving â diving within the entrance of a cave, where light is still visible.
Equipment which is used for underwater work or other activities which is not directly related to the activity of diving, or which has not been designed or modified specifically for underwater use by divers is excluded. Rebreather, closed-circuit or semi-closed-circuit scuba. 2  Free diving or breathhold diving, where the diver completes the dive on a single breath of air taken at the surface before the dive. 3  Snorkel allows breathing at the surface with the face submerged, and is used as an adjunct to free diving and scuba.