I referred to the above YouTube tutorial video on making an undersea effect and it was very useful to me.

Referring to the steps he gave,

1. I first installed the “Water Plugin” and added the water form in my scene.

2. In order to be able to show the colors under the water and simulate the sunlight underwater, I need to add a “box” and add a “post process”, it can be used to adjust the blue color of the whole scene.

3. If I want to make the sea water a little green, I can adjust the “gamma curve”.

This was my first attempt, but it wasn’t very difficult for me because Emily taught us how to create a water material in the first semester.