Underwater effect- 'god-rays' and caustics

Hi
Trying to create a realistic underwater scene. I have my animated assets but really need realistic 'god-rays' and caustics for the ocean floor.
Is anyone aware of a good asset or shader for this?

 

This guys stuff is always good, i have several of his assets. I am using the bubbles not the god rays myself but i checked then out and thought they looked nice:

https://assetstore.unity.com/packages/vfx/particles/environment/bubble-fx-98928

For caustics consider using a light with animated texture cookie. I am using the one from https://assetstore.unity.com/packages/3d/environments/underwater-cave-environment-pack-81316 which is also a good asset albeit a bit pricey. You can probably find a caustics animation on Google. Good luck!

 

Thanks!