A real life island was imported into 3ds Max via GroundWiz importer and textured with GroundWiz Terrain Map. GroundWiz Planter placed trees and rocks on certain GroundWiz layers so that they were planted only on the green area of the island.
Underwater texture was also made with GroundWiz Terrain Map and water was done with standard 3ds Max maps. mental ray was used for rendering the scene. Take a look at the animation of this island scene.