Cave diving is scuba diving which is done in underwater caves. Cave divers dive for adventure but also to find fossils and gather data (dirt samples, water temperature, etc.) that helps scientists better understand the earth and the environment.
Cave diving is more dangerous than diving in open water:
- cave-ins can bury divers and drown them
- divers can panic from being in an small, enclosed space (a panic which is called "claustrophobia")
- divers use a guide line from the entrance to find the way out
- divers must take care not to run out of air inside the cave