Sharks and whales are certainly popular with the younger set! I got a donation of many 100s of small styrofoam cups so they were great to use for making this project. I glued 2 together and cut egg cartons up into strips so they could make fins and tales. the ends are easy to pierce with scissors to insert the tail and make teeth. a bit of gray paint and we were there. We had magazines that my helper Jolanda brought for inspiration too.