Why go to the beach in addition to the usual bathing? It turns out that it is possible to collect a dry fin with a dry waves, and there is already a magical way to turn it into something interesting - in the real sea horse.
What you need:
Slices of dry fin straight shape (conventional plastic package will be enough);
Dense cardboard;
Pencil;
Universal knife;
Glue for hot gluing.
Make a blank from cardboard, you can take any drawing of a sea horse. Then cut the workpiece using a universal knife. Next sort the dry fin to choose the parts you can use. Selected twigs can now stick on a pre-prepared shape of the cardboard, of course, it will take time and skill.
Try to apply a dry fin in parallel.
After you fully laid out all parts of your future sea horse, warm the glue and start pinning the fin, moving from the tail up.
Walnut can be used for an eye.