Geometry is polys based on quads with few Tris. Clean edge flow The scene is neatly organized groups in a hierarchy. Clear naming convention. All Geo has deleted history. Transforms set to zero at world origin.
Water surface is animated with a noise deformation plugin (included with download.) Custom 'caustic' image sequence that is tillable and cycles at 120 frames. the cycle repeats via an expression.
Scene is setup to render with Mental ray HDRI lighting