Final answer:
The statement that a Diving Buoy marks areas where SCUBA or other diving is in progress is true; it serves as a crucial safety marker.
Step-by-step explanation:
The statement "Diving Buoy: Marks areas where SCUBA or other diving is in progress" is true. A diving buoy is indeed used to indicate that divers are present in the area.
It is a safety measure to ensure that boaters and other watercraft users are aware of the divers below to prevent accidents.
Scuba divers, such as those exploring the Great Barrier Reef or the Caribbean, must be cognizant of various factors like buoyancy, pressure equalization, and dive time to mitigate the risks of pressurized gases in the body when breathing compressed air from scuba tanks.
These aspects are critical for maintaining diver safety and health during underwater excursions.