Spinning Propeller Submarine – Summer water fun is a 3D-printed submarine toy designed specifically for summer water play, featuring a streamlined body and a realistically movable propeller. Simply submerge the submarine in water to fill its interior, and it will naturally sink; as it descends, the rear propeller continuously spins with the flow of water. When the submarine rises back to the surface, the propeller reverses direction, adding a lifelike and engaging dynamic effect to the entire diving process.

The model employs a multi-part printing design, allowing the propeller to rotate freely and enabling assembly without any additional hardware. Whether in a swimming pool, bathtub, or by the seaside, it delivers a fun-filled summer water experience.