An implementation of underwater effects that show under the water line.
Download the lates release or download from the green code button.
In your URP render settings, click add feature and choose Horizon Line Texture and any of the additional effects shown. Make sure that the horizon texture pass is the first pass called. It should work after that.
If you wish to add more effects on top of the existing ones, you need to sample the _HorizonLineTexture. This lets you seperate the waterline from the air above the water.
If you wish to contriubute to this repo, feel free to make a pull request.