Wall diving
Wall diving is underwater diving alongside a near vertical face, usually an underwater cliff. It is a type of reef diving popular among recreational divers for the biodiversity of the benthic community on the one side with a pelagic community on the other, and useful in scientific diving when assessing biodiversity of a region. Wall dive sites vary considerably in depth, and many are suitable for drift diving when a moderate current flows along the wall. The context is usually recreational diving, technical diving, or scientific diving on scuba. No special training is required, but this environment requires good buoyancy control skills for safety.