Mask, fins, snorkel, knife, tank, bcd (buoyancy control device), wetsuit, weight belt, regulator, pressure gauge, depth gauge, etc.
In a tenths situation is when sky divers use decimals.
ANSWER:Metal helmets are still in use by professional divers. Many consider the metal helmet to be safer than SCUBA gear.
Many people use a SCUBA suit for diving. Sport divers, police divers and some Navy recovery divers.
You can breathe underground by using submersible breathing aparatus similar to scuba gear used by divers.
Shamwow!
Many scuba stores sell scuba diving cameras. Check a scuba gear stores in your area. This will allow you to compare cameras and get advise from fellow scuba divers.
Pearl divers traditionally used a technique called free diving, where they hold their breath while diving underwater to collect pearls. They typically trained to increase their lung capacity and learn to remain underwater for extended periods. Some divers also used weighted belts to help them dive deeper and return to the surface quickly. In modern times, divers may use scuba gear to breathe underwater more easily and safely.
Divers use 21% Oxygen and 79% nitrogen while underwater. It results in the same exact air we breath on the surface.
To use it in that form, you could use it as a command. For instance, Dive into the water. To use it in another way, you would have to change the verb tense to "dove" or "diving" or something else like that.
they need protection from stuff
The army of which country?
Gravity.