I'm trying to render an image below the sea surface, what I've done is create sort of a cube with a wavy surface, than applied "heavy rippled water" material and played around with it. From outside, it looks good right now (apart from the edges of the water and the intersection with the "sand"). But when I go inside the cube (with the camera) I thought it'd be possible to see outside the cube just as you would as if you were underwater. All I get is the image below.
Any sollutions to this?