Ricordia/Ninja Hermit

I love the colors and textures of the circles in the ricordia, but noticed after taking the picture that my white-legged hermit crab was hiding in the top of the frame. I've never heard of it before, but he likes to bury himself up to his eyes in the sand, and then pounce on food or snails or crabs wandering by. It added a couple more cool circles to the picture, and decided the submission for me.