v176 Iray Coral Reef includes a Scene builder pack, Coral Materials, Coral Rock Materials.

Scene Additionals are 3 Iray Environment (Render) settings, 3 Fog variations.

Sets include 3 Sets: Reef Rock + Corals, Recommended scene buildings are Scene 1 or 2 or 3 + Environment 1 + Fog 1 + Water Shadow+Light, *Scene 1 or 2 or 3 + Environment 2 + Fog 2 + Water Shadow+Light, *Scene 1 or 2 or 3 + Environment 3 + Fog 3 + Water Shadow+Light

The maps for PBR Materials are Base Color, Normal, Roughness/Specular, Height, Opacity