This is a 3D-printed little fish designed for summer water play.

To showcase it, I even took my child to soak in a hot spring—haha!

Its tail is crafted as a water-wheel structure; when water flows past, the tail spins, propelling the fish forward.

It’s perfect for swimming pools, bathtubs, basins, and family water-play moments.

Besides being fun, it also serves as a simple educational tool demonstrating the basic principles of fluid dynamics, allowing children to visually observe how flowing water can set objects in motion.

We recommend printing it in bright colors to make it more eye-catching on the water’s surface. You can also experiment with different color combinations to create your own unique summer pool fish.

This is a playful 3D printed fish designed for summer water fun.

Instead of making a simple floating fish, I wanted to create a little toy that actually moves in water. The tail is designed as a small water wheel. When water flows through it, the tail wheel spins, making the fish look like it is swimming.

It works great as a pool toy, bath toy, or a simple water-mechanism demo for kids. Print it in bright colors to make it stand out in the water, or try your own color combinations for a fun summer pool party vibe.