Create an impressive scene with a mermaid lying on a sea-splashed rock with this brilliant crystal growing activity kit. Simply assemble the cardboard model and place it in the tray, then add the crystal solution and leave it for a little while. The paper will begin to absorb the liquid, and as if by magic as series of blue crystals will begin to form. Leave it for a few days and the crystals will grow into an impressive foamy froth of waves crashing against the mermaid’s perch.