Tropical Island Environment
Preview: https://www.youtube.com/watch?v=3_yVtr_ANAU
Scene consists of large landscape with two connected islands, cliffs, rock formations, photo-scanned rock meshes and materials, tropical foliage, birds (as a particle system), shore waves (using a spline mesh) and sounds.
Ocean Floor EnvironmentPreview: https://www.youtube.com/watch?v=pDb5djBOWe0
Contains five rock meshes that makes use of displacement and tessellation, they also come with material instances to adjust the sand amount on top of them. All vegetation is paintable using vegetation tools. Terrain material has parallax enabled and contains two layers (just 6/16 texture samplers). Plane and submarine wreckage has instanced materials which you can adjust the algae and sand amounts. The eel is a skeletal mesh and has three animations while the fish schools use the particle system.