Working Principle, Design, and Function of the Float Ball System 1. Working Principle of the Float Ball System: When the snorkel is fully above the water surface, the float ball sinks due to gravity, opening the snorkel and allowing air to enter, providing sufficient oxygen. When the snorkel is submerged, the float ball rises due to buoyancy, closing the snorkel opening to prevent water from entering. This design ensures breathing safety and comfort in different environments. 2. Waterproof Design: Please note that this product is only suitable for surface snorkeling. When diving underwater, the float ball system at the top of the snorkel automatically prevents water from entering. As soon as water contacts the snorkel, the float ball quickly rises, closing the snorkel opening to keep it dry and prevent choking. However, this will result in a lack of air in the snorkel, causing breathing difficulties. Therefore, users should return to the surface as soon as possible to avoid breathing difficulties. 3. Impact of Waves and Head Movements: On the sea surface, with waves or when the snorkeler is observing the seabed, if the head is tilted too far forward, the float ball will automatically adjust according to the water level. The design of the float ball allows it to rise and close the snorkel opening when it is below the water surface, preventing water from entering. 4. Blowing to Reset: If you dive underwater, remember to exhale (not inhale) while ascending to the surface to ensure the float ball descends again. Make sure the float ball moves freely within the snorkel and that the snorkel head is completely above the water surface before inhaling.