Attached Link: http://www.lysator.liu.se/~kand/caustics/

BTW- the ORIGINAL dolphin texture map was included in the post- but it was later removed. --However, Mesh_Magick applied it to the TOP part of the dolphin map, and let it fade out on the lower part- using Photoshop. So- you could try this with your own texture maps- using, I would suggest, the Caustics program bruno021 suggested previously. "Caustics Generator" can make extremely hi-rez caustic maps-up to 8000x8000, I believe...