Animated Seaweed and finished level

For the animated seaweed I used the Terrain tool in Unity. In the grass section I could add my own grass texture, adjust the sizes and paint it on the ground.

The grass was automatically affected by the default wind settings.

To finish off the scene I added a custom Skybox to make the level appear under water, a mist and particle system simulated the density near the bottom and a few buildings in the background made the scene more interesting and colourful.