How do sand dollars eat? Let's ask biologist Tim Wong! "These planktivores use their fine tube feet and short spines to capture food from the water column. The feet and spines direct the food to the 'bottom' of the sand dollar along grooves that end at the mouth in the center." | California Academy of Sciences

Thousands of sand dollars were discovered on a beach in Seaside, Oregon. Sea dollars feed on planktons and can be found in waters worldwide. Their shells are covered by millions of spines that allow them to move in the water. | CBS Sunday Morning