Thousands of sand dollars were discovered on a beach in Seaside, Oregon, on August 15, according to footage and pictures from a local aquarium.
“At this time, we do not know what is causing this, and these types of incidents usually have several contributing factors. We are also unaware if this is an isolated incident or if this is happing on other beaches,” the Seaside Aquarium said on Youtube.
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. Credit: Tiffany Boothe/Seaside Aquarium via Storyful