You will make your surface seem rougher using a texture map to modify the normals of the face to control the appearance rather than creating a lot of vertices. The following steps will guide you in making a surface for water:
Create a new file and delete the default cube.
Press Shift + S and choose Cursor to Center. Press Shift + A and select Mesh and then Plane from the menus.
Press S, Shift + Z, 800, and Enter. This scales the plane in both the X and Y axes.
Press S, Z, 1.5, and Enter.
In the Properties window, select the Object button from the header, it's the button with the cube on it. Rename the object from Plane to
Ocean
, and then press Enter.In the Properties window, select the Material button from the header; it's the button with the chrome ball on it.
Select the New button.
Name the material
Sea Material
.In the Diffuse subpanel, click on the white button and set the Diffuse color to R:
0.000
, G:0.015
, and B:0.035
.