Slip on your flip flops, head to the beach, and have a whale of a good time building a sandcastle! Build a castle in the sand—ask a friend to lend a hand, joining in a day of fun celebrating in the sun.Be sure to also check out Starfish’s Five-Star Tips about the science of building sandcastles. So, pack up your shovels and buckets—and head out for a perfect sunny day at play!