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Fins are worn on the feet to increase swimming efficiency and propulsion through the water, improving a diver's maneuverability.

A BCD is a jacket that can be inflated or deflated to control buoyancy in the water, aiding in ascending, descending, or maintaining neutral buoyancy.

A scuba tank contains compressed gas, typically air or enriched air nitrox, providing the diver with a breathable gas supply underwater.

A wetsuit provides thermal protection to a diver through insulation, as well as offering a degree of abrasion resistance.

A snorkel is a tube that allows a diver to breathe while swimming face down on the surface, conserving tank air or when free diving.

A depth gauge measures the diver's depth underwater, which is essential for monitoring decompression limits and avoiding deep diving hazards.

An SPG displays the remaining air pressure in the scuba tank, allowing divers to manage their air supply during a dive.

A diving mask creates an air space in front of the eyes, allowing for clear vision underwater. It also enables a diver to equalize the pressure in the air space as they dive deeper.

A dive computer provides real-time dive information, such as depth, time, decompression status, and conserves dive profiles to optimize dive safety.

A regulator reduces the high pressure in the scuba tank to ambient pressure and delivers breathable air to the diver when they inhale.

A weight system helps divers achieve negative buoyancy, allowing them to descend underwater and counteract the buoyancy of other diving equipment.