Here is another nine square matching puzzle - see thing:147984. The completed puzzle shows 63 dolphins cavorting along a Hilbert curve. A square containing dolphins was constructed using the program from thing:65572, Hilbert Curve Coasters. The dolphin pattern came from MaakMijnldee's cookie cutter collection - thing:35495. The complete square is included here; it was divided into nine pieces with an openSCAD program, also included. The tiles are best printed directly on the build platform. The openSCAD program outputs a file containing all nine tiles ready for printing. I separated the tiles because of the size of my build platform. The symmetry of the Hilbert curve makes this simple puzzle a little confusing. There are no cuts that bisect dolphins; cuts are limited to noses, tails and fins. One way to start is to locate the central tile. A pdf key is provided.