Final answer:
You may only dive SCUBA in an enclosed space if you have specialized training in an overhead environment. Scuba diving safety involves understanding buoyancy and pressure, as well as ascending slowly to prevent decompression sickness, with hyperbaric oxygen therapy as a possible treatment for DCS.
Step-by-step explanation:
You may never dive SCUBA in an enclosed space unless you are properly trained and certified in overhead environment diving, which includes cave diving or wreck penetration diving. It's crucial for scuba divers to be aware of buoyancy, pressure equalization, and the amount of time they spend underwater to mitigate the risks associated with pressurized gases in the body.
Scuba divers must also be cautious when ascending to the water's surface because a rapid ascent can result in the dissolved gases forming bubbles in the body, potentially causing decompression sickness (DCS). To avoid DCS, divers should ascend slowly or make several decompression stops. If DCS occurs, hyperbaric oxygen therapy in decompression chambers may be used as treatment.