This is a little loop which I prepared for a workshop aimed at 10 to 15 years old. Unfortunately I didn't have the time to do the animation part...

The beach and waves are made of animated shaders, and actually there is no water shader...

The file is under licence CC BY-NC and the music and waves sound are from freesound.org and under CC 0 licence.

You will find a free version on Gumroad here.

Have fun !