Synchronized swim program/class?

Hi-

Does anyone know of a synchronized swim class or program for kids (7 & 10)?  I would ideally love something in Berkeley/Oakland side of the tunnel but open to other locations. I know about the Aquanuts program, which seems great but maybe more intense than my girls would want.  Ideally it is something fun for the summer for girls who love the water and dance/gymnastics.

Thanks!