April 3, 2015
These little critters are a type of sea urchin. They seem to be most easily spotted around sunset, when they come out to feed. As the sun sets, they will find a place to settle in for the night and begin to lift little bits of broken coral, rocks or whatever up onto their bodies, passing it along the spines to the top of their small bodies. More rocks will join them until the egg is completely camouflaged to look like just a pile of stones. This little guy, spotted just off my resort in Cozumel, was just getting started when I snapped him.