I have two terrains and water below them. When I am at a certain height, the water is visible through them.
The sandy terrain (left one) is located at 0.5m height but at its sides is lower because I want it to be seen like a real island. You can see that at those, smaller heights the water is visible.
The green island is at 0.2m height. It looks like crap, because it is lower than the sandy island.
I cannot afford to make them really high because they will look un-natural. Is there a way to fix this?
Does this effect your game, or merely your scene view?
Try also changing the “near” clipping plane, which should be very close to the camera. If you are not getting that close to objects, you can lift this value.