This was the class work from the 1st week of my on line course
"Photorealism with Mental Ray"
Here you are looking at a Spherical/Environment Map projected through the camera for the background, and then a blurred version of that map is projected onto the ball. There is a floor plane that is reflecting the sphere and has a bump to give the reflection qualities similar to the water.
Sphere Shading Group
Floor Shading Group(reflection)
Camera with Environment Map(background)