A tessellation of turtles in symmetry group p4gm in centred cell orientation. It's turtles all the way down! At least to the bottom of the Great Barrier Reef. Currently displaying chelonians in 2 alternating colour sets, brown and green with black outlines, which reduces the symmetry to p2mm. Other colours, stylings, sizes and orientations are available on request and you can even ask for a combination of several designs together.