The following video shows a naval world featured in E3 2012, which I was involved in during the production of Assassin's Creed 3.
Caribbean Naval World
I was part of a team that built the whole Caribbean world which involved texturing, modeling, UV mapping, optimization through LODs, reflection and shadow proxies, collision and engine integration of mesh assets, materials and instancing.
Another level I have been involved in is the Dead Chest Island. I modeled the organic objects such as rocks, caves and some vegetations.
Dead Chest Island
(Reference available upon request.)