With summer currently in full swing, your kids are bound to spend time fishing or swimming with the fish in the ocean. Afterward, they can take some time to wind down by creating a clay fish.
First, your kids will need to scour the beach for seashells, smooth stones or any other item that they think they can use to decorate their clay fish with. You can give each of the children a bucket to collect their treasures.
Second, give each child a block of clay that they can shape into a fish. The clay doesn't have to be colored because your kids are going to paint the fish in the next step. They make fish molds for use on the beach if you want to use one of those to create the shape of a fish. My kids like turning their clay into fish without the mold, but it could be helpful for some kids.