Shipwreck. Mesh and texture are photoscanned from a real shipwreck. Simple sand and water textures for Cycles/OptiX. 299k verts, 584k faces (tris). Native .blend set up for OptiX, and fbx, obj/mtl, dae, abc, usdc, ply, stl, x3d, and glb.
BLEND (Blender, filesize: 82.3 MB), OBJ (OBJ, filesize: 66.3 MB), FBX (Autodesk FBX, filesize: 22.9 MB), GLTF (glTF, filesize: 83.3 MB), DAE (Collada, filesize: 91.8 MB), ABC (Alembic, filesize: 42.5 MB), STL (Stereolithography, filesize: 27.9 MB)