Life Under The Sea. Bring the magic of the sea to your child s party with Mermaid Props. These props will make all of your guests feel like they are in the deep blue sea. 16 props per package. Assorted styles vary in size from 4 to 3 6 . Made of plastic. Requires scissors to cut out props. Tropical decorations and tableware are a must have for any luau or Hawaiian themed party. Don t just fill up your guests bellies! Let them feast their eyes on colorful luau decorations throughout your tropical party.