A Sand Dollars Breakfast is Totally Metal, Deep Look

Their skeletons are prized by beachcombers, but sand dollars look way different in their lives beneath the waves. Covered in thousands of purple spines, they have a bizarre diet that helps them exploit the turbulent waters of the sandy sea floor. Please follow us on Patreon SUBSCRIBE to Deep Look DEEP LOOK is a ultraHD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. See the unseen at the very edge of our