I was looking at the work of Escher ages ago and wanting to do a tessellating design - I guess now I've found one! His seahorses are far more organic and tessellate into other seahorses - that would have to be done with applique but I like this version! I've been googling around and there seem to be quilt patterns out there called 'Tessellating Seahorses' in books by both Karen Bolestra and Barbara Schaffield but I can't find images of them. I don't think I'm breaching anyone's copyright as a) log cabin is a public domain block and b) I've only taken an idea and created my own design - there's no copyright in ideas - I don't think I'm treading on toes... at least, I hope not!