This is a 3 layer cake. Outter edge is made out of graham crackers dipped in choc Candy Melts then Piped the cracks in w/the Candy Melts for a finished look. The bubbles are made w/BC frosting & I mixed in vanilla Candy Melts (blue). The ducks are hollow white choc ducks. This cake was time consuming, but lots of fun to make! It was a big hit! Mommy-to-be loved it!