This Lithuanian legend is about a young fisherman named Kastytis who lived with his mother. He fell in love with the sea goddess Jūratė. One day during a storm, Kastytis finds Jūratė trapped in her seashell castle. He rescues her and brings her to land. According to the legend, pieces of Jūratė's broken seashell castle became amber stones that wash ashore after storms. The legend explains the origin of amber and why children in Lithuania collect the yellow stones on the beach.