This species is found in the intertidal and subtidal ( to 40 meter deep ) of sandy shorelines, though it most commonly inhabits shallower subtidal areas. individuals that live intertidally will burrow down into wet sand when the tide goes out, to wait out the dry spell between tides. the eccentric sand dollar is found from southern Alaska to northern Mexico.
The one I have has a beigey ton to it. Hans dug it out of the ocean floor, it was standing up. I read they're either flat on the ocean floor or standing up.