Bug Water Shader Problems

I'm not sure how to describe it, there is a weird brown area under the water. The attached video shows it. If you are wondering, I used Brackeys tutorial on the cartoon water shader (i am complete crap at shaders).

Here is a video of the problem: https://drive.google.com/file/d/10dC8MKADSn_C3zEBKOYF35b-WxRWmCAG/view?usp=sharing

Any help is appreciated.

 

I think it is a shadow from your waterplane. You have to change material rendertype of waterplane object to transparent. It should exclude it from shadow rendering step. Other solution will be disabling cast shadow on the MeshRenderer component.