Satellite Beach, Florida, USA.
Tiny bristle worms have created a small reef at the beach closest to my house. What appear to be rocks in the water are actually sand tube mounds that can only be seen in the couple of hours surrounding low tide. On this day, having misread the tide table, I arrived when the reef was barely visible. The scene wasn't very dramatic but I worked it hard in the camera and on the computer for what I hope is a pleasing result!