A mermaid theme party is an excellent opportunity to help kids appreciate the underwater world. If you plan one for your little princess, buy our Mermaid Theme Birthday Decoration. The décor includes a balloon arch of multiple coloured balloons, free-floating balloons, mermaid foil balloons, banners, cutouts and other decorative supplies. Besides birthdays, you can use the theme for different events, including a baby shower or even to welcome your baby home for the first time. To book the Mermaid Theme Birthday Decoration, create an account at Book My Balloons and make payment. Select the time, date, and venue. We’ll set everything up at the promised time before your guests arrive.