A walker shares a photo of a strange Baltic Sea find – beach discovery raises a mystery. The online community is puzzling: Is it a turtle, a spaceship or something completely different? The Baltic Sea offers a variety of discoveries and not every stone is the same.
Members of the Facebook group "Beach Finds Sea Glass, Fossils, Stones and the Sea" solve the mystery. It is a sea urchin “Echinocorys sp” and is “70 million years old”.