What should I do with the waves?

Hint 1 of 9:

Those waves look a bit choppy.

Hint 2 of 9:

They even look a bit unnatural.

Hint 3 of 9:

Real waves would flow together a bit more smoothly than the ones here.

Hint 4 of 9:

That's what you need to do -- make the waves flow together smoothly.

Hint 5 of 9:

Try moving your cursor over the waves.  Notice that they stop?