Sand dollar exoskeletons are often found washed up after the animal has died. But this live individual has put on a hypnotic ...

This hypnotic timelapse shows a sand dollar trundling in circles on the ocean floor, leaving a precise circular trail in the sand - its very own sand art. Sand dollars may look like simple beach ...

Beachcombers along the Texas coast were treated to an unexpected treasure this past week: sand dollars — lots of them — scattered across the shoreline like nature’s own currency. These fragile, round ...