Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Yughues Underwater Plants v.2 Free.
Yughues Underwater Plants v2
109 algae, sponges & corals to create colorful and lively underwater environment.
Ready for Unity5. Contains a version for “Advanced Foliage Shader v4” by Forst for better animation of the seaweed.
AFS v4 not included! [Get it here]
The asset contains:
– 109 prefabs (30 coral stones, 25 seaweeds, 27 corals, 16 shells, 11 sponges)
– 106 meshes (.fbx) (2 to 784 tris)
– 121 textures (.tga)(256 to 1024)