Underwater in Realistic Style for Unity

Realistic vegetation with PBR bark and leaf textures, normal maps and alpha-tested leaf cards. Trees, bushes, grass and rocks packaged for Unity: drop the package into the project and the LOD Group, materials and colliders are already set up. This group covers underwater plants and reef forms for seabeds, lagoons and shallow water: staghorn coral, red coral, brain coral and sea fans, plus kelp, seaweed and water lilies. Used together, they create the layered look of a reef or a sheltered lake bottom. Each model ships with LOD0 to LOD3, collision and a pivot at the base, so corals stay anchored to the seabed and do not float. Kelp and seaweed carry sway weights for gentle movement. Every seed gives a different branching shape or frond arrangement, and the models export as GLB, FBX and OBJ for Unity, Unreal Engine, Godot and Bevy. 7 game-ready models in this selection. Every model has LOD0–LOD3, collision and a pivot at the base, and each new seed gives a new variation of the same species.

About the Realistic style

Realistic models use the PBR metal/roughness workflow that glTF 2.0, Unity, Unreal, Godot and three.js read directly.

Bark: base colour, normal and roughness maps on the trunk and branches.
Leaves: alpha-tested (masked) cards with leaf-cluster textures, not alpha-blended, so they write depth, need no sorting and cast correct shadows.
Bark and leaves use separate materials, which keeps draw calls predictable and works well with GPU instancing.
LOD0 is the close-up mesh; LOD1–LOD3 drop branches and leaf cards, so the last level is light enough for far distances.

Best for first- and third-person games, survival, open worlds and simulators on PC and consoles. On mobile, start from LOD1 or LOD2 as the nearest level and watch overdraw from leaf cards.

Using it in Unity

Unity imports FBX and OBJ natively; for GLB/glTF add Unity's official glTFast package (com.unity.cloud.gltfast), which imports at edit time.

Meshes named with _LOD0…_LOD3 suffixes get a LOD Group automatically on FBX import; otherwise add a LOD Group and set screen-size thresholds by hand.
Put the collision mesh on a Mesh Collider (enable Convex for rigidbodies) and keep its renderer off.
Leaves: enable Alpha Clipping in the URP/HDRP Lit shader and render both faces.
For the Terrain tree painter, save each tree as a prefab with a LOD Group. Dense forests benefit from GPU instancing, the SRP Batcher or the GPU Resident Drawer in Unity 6.

No SpeedTree importer or licence is needed.