Preheat oven and prepare the cupcakes per the instructions on the box. Line the cupcake tray with paper liners and scoop the cake batter. Bake cupcakes and cool completely.
Gently and lightly mix blue and white frosting together to create an ocean water look. Next, pipe a thin base of white frosting on each cupcake. For beach only looks, dip cupcake upside down in blue or gold sanding sugar.
Place desired sugar decorations on top and lastly, add umbrella if desired.
Serve it with tropical drinks. Enjoy.