Please see how to import this creation.
These waves need a texture rotation script for them to work. For the shore wave:
llSetTextureAnim(ANIM_ON | SMOOTH | LOOP, ALL_SIDES, 1, 1, 0.0, 0.0, 0.1);
For the ocean wave:
llSetTextureAnim(ANIM_ON | SMOOTH | ROTATE | LOOP, ALL_SIDES, 1, 1, 0.0, 10.0, 0.1);
With these scripts you can also use some sound files to simulate crashing waves. See the freesound project for free sound effects. Just upload the sound files, put them into the contents of the wave prim and replace the name of the sound file in the script with the name of the one you uploaded.
[EDIT 14th July 2010: I updated the sculpts for the shore waves to make them look more natural, so there's a selection in the package to chose from now. Nr. 1 is the original, Nr. 2 is the new one, 3 and 4 are variations that are a somewhat more rugged. The new waves can fit into curves on the shoreline better as well. If you need to reverse them, just rotate the texture by 180 degrees so the waves come rolling the opposite direction.]
This work is licensed under a Creative Commons Attribution 3.0 Unported.