Leonardo da Vinci designed a diving suit for breathing and moving underwater.
His concept included a suit, a mask, breathing tubes, and a system intended to keep the diver supplied with air. The design is usually associated with his studies of underwater operations and possible attacks on enemy ships.
Leonardo’s drawings show equipment connected to the surface or supported by floating components. They do not represent modern scuba equipment, which depends on compressed-gas cylinders, regulators, and carefully engineered pressure protection.
The design is sometimes called Leonardo’s diving suit, but it was never documented as a working invention used by divers. Its importance lies in showing that Leonardo considered the practical problems of underwater breathing, buoyancy, movement, and communication.