One morning while we were camping at Sunset Bay State Park just south of Coos Bay, we went on a Ranger-Guided Tidepool Walk. It was wonderful to have a knowledgeable person to guide us and answer questions. We managed to get there at a minus tide, so the viewing was particularly good. From the top right, going anti-clockwise the pictures are:
Giant Sea Chiton
Six Legged Sea Star
and in the center is Teen2 looking like she's in trouble, but she was on a huge rocky table and the waves were actually quite far away.
Most of theses photos were taken through the water, but if you position yourself so a shadow is on the surface of the water, they come out all right.