Any animal theme cake is very popular among kids at birthday parties, and octopus theme cake is no different. The most interesting theme about this sea creature is its 8 arms. Cake decorating options are always great with octopus theme cake. You can add vibrant and glossy colors and style the octopus in different ways with various stances to make it unique and make it look as real as possible. Professional cake makers have also come out with 3D octopus cake that appears as if it has just come out if the water. Along with a large octopus birthday cake, little Octopus cupcake would also be a great delight for the kids as well as other guests.