Scuba tanks are crucial for providing divers with a supply of compressed air or other gases needed for underwater breathing. Typically made of aluminum or steel, these tanks can hold air at pressures ranging from 2000 to 3500 psi. They come in various sizes to accommodate different diving needs. The tank is equipped with a valve that regulates the flow of air to the diver. Proper maintenance and regular inspections are essential to ensure the tank's safety and functionality. Divers need to be familiar with their tank's capacity and pressure to manage their air supply effectively during dives.