How to mimic Google Earth Oceans in Cesium?

How would I mimic Google Earth's Ocean functionality in Cesium? Functions such as going under the sea surface are unavailable currently.


Cesium does not currently have support for going under the sea surface. However, it is one of the most frequently requested features so it is definitely on our radar. However, we’re currently focusing on finishing implementing 3D tiles and we have a few other things that have higher priority.