Use shadertoy, see Little Shader Book ( 
a bit more complicated )
from the Collection of examples from discourse.threejs.org
Try examples
Shader - Shadertoy BETA
Shader - Shadertoy BETA
Thanks for your help
As you said, porting Shadertoy to Three.js is quite complicated, and I will try it out
Alternatively, you can use just small square planes with a flat texture applied to render the bubble - and a thicknessMap faking a spherical IOR on top of that.
Hello
Do you mean to use plane+thicknessMap to achieve the effect of a sphere, and then use shader to achieve ior, reflectivity, and so on, making it look more like a bubble.
This is easier to implement than fully using shader
Nope, you don’t need any custom shaders - you can just use MeshPhysicalMaterial. Even further - MeshPhysicalMaterial allows you to use .iridescenceMap / .dispersion if you’d ever want the bubbles to look soapy instead of just water.
I’d suggest also filtering through @prisoner849 's “resources” posts in the forum here, he’s done a few beer examples 
Thank you very much, let me give it a try
Okay, thank you for your answer
It can be achieved by Particle System. Try quarks.art, it has an editor to make what you need.
Github