Unreal 5 Water Questions

I am pretty new to Unreal 5 (about a month and some change in). I am making multiple islands in a small ocean. While I think my water looks ‘good’, I have some questions including this small issue I have encountered.

  1. As seen in the first screenshot, I somehow have separated the in game ocean from the one out of bounds. The in game one appears to be higher up. I am sure it is a very easy fix, I just don’t know when this occurred. When I decrease the high of the one in the main world it doesn’t fix the other one and makes it go down along with it.

  2. Sea foam. I have looked at several videos online and tutorials and haven’t really found a solution for what I am looking for. What are you’re recommended ways to emulate it and how would I go about that?

  3. One last question I had is about making islands. When you make a new world and put down a plane, you can put an ocean on top of it and have it automatically shape to an island. However, it doesn’t appear like I can do that twice. Another logical issue, I just want to know how I can easily do that again. This one isn’t a very big deal.

Thanks to those that help, I love how fast the feedback is on here!