Google Earth depth readings

Depth data is present in GE for particular inland bodies of water such as Puget Sound and Lake Washington.  This is not true of other inland bodies of water such as Sammamish, Chelan, Banks, and Roosevelt Lakes.  While rendering the ocean as terrain is built into GE, I have found no way to render as terrain the existing depth data for these inland bodies of water.  I have found a bathymetry data layer from the U of Washington, but this is not using the native, existing GE data.  Does anyone know how to do this?

totally depends on which format you are grabbing and translating, and which software you are going to employ to read it.  Google Earth is quite limited on the file types it can chew on.  Hence, my past recommendations for ArcGIS Explorer.  I can read live streaming noaa vector data directly over the top of a hybrid street/satellite image, alter the sequence of layers, and shift the transparency of said layers.  It's all there, it's all free, it just takes some reading and stubborn nerdness.

Thanks, I understand there are plenty of nautical layers I can add to GE.  My point is that the depth data for certain inland bodies of water is already in GE (negative elevation), just like the dry land terrain elevation data.  The dry land elevation data renders as 3D shaded relief, so how can I get the wet elevation data to render as such?