Preheat the oven to 350 F and line a 12 count muffin tin with cupcake liners.Lightly greaseliners with non-stick cooking spray.
In a large mixing bowl, combine the sugar, eggs, melted butter, vanilla extract and milk. Slowly fold in the flour and baking powder.
Fill the cupcakes wells about 2/3 full.
Bake in the preheated oven for 18 to 20 minutes.Remove from the oven the let cool.
While the cupcakes are baking, pour 1/2 of the light pink and peanut butter candy melts into separate microwave safe bowls.
Microwave in 30 second increments, stirring occasionally until melted.Fill the candy mold with melted chocolate. (We did brown starfish and pink shells!)
*Place in the fridge to set about 20 to 25 minutes.
Add a few drops of blue food coloring to the white frosting and mix. Once cooled, generously frost each cupcake.
Dip 1/2 of the cupcake into the crushed graham crackers for the sand and then add a seashell and/or star fish.
Repeat with all cupcakes.