Recently, according to media reports, thousands of Sand dollars in oregon died after being washed away by the tide on the beach.
It is reported that the sand coins were still alive when they ran aground, but only survived for a few minutes after leaving the sea, and soon began to die. The local aquarium advises visitors not to bring home live sand coins as they smell rather unpleasant.
One expert said that sand coins are difficult to survive when they rush ashore, and if you find them still alive, you can throw them back into the sea.
It is understood that "sand coin", also known as "sand money", is one of the orders under the classification of sea urchins, and its official scientific name is linformes.
Sand coins live on or buried in sand surfaces in the intertidal or subtidal zone, and even spread to the seabed at a depth of 3,000 meters. Because of its habitat and shape, it is mostly disc-shaped, like a coin, hence the name.