Your search for "wave" revealed the following:
Spiral Moon Tattoo Celtic Pictish Design
$ 3.99A simple and elegant crescent moon flowing with Pictish and Celtic spiral forms, the water-influencing planet is shown with waves...
Celtic Dolphin Tattoo Design
$ 8.99A knotwork dolphin unites the beauty of the cetacean form with delicate endless knots. A suggestion here is to add...