About the beginning of the 16th century, Leonardo da Vinci is said to have invented a diving apparatus. But a certain spider named Argyroneta aquatica already had a perfect system for breathing under water.
लगभग सोलहवी सदी के आरम्भ में लियोनार्डो डा विन्सी ने निमज्जन उपकरण का आविष्कार किया ।