A diving bell is a submersible device used for underwater exploration and work. It is typically a large, sealed chamber that allows divers to descend to significant depths while providing a supply of air. The design helps to counteract the pressure of the surrounding water, making it safer for divers to operate at great depths. Diving bells have been used since the ancient times, with notable advancements during the Renaissance period. They are often employed in underwater construction, salvage operations, and scientific research, allowing divers to stay submerged for extended periods while remaining safe from the surrounding water pressure.