Bring a magnet! We love to collect “black sand” or magnetic mineral magnetite at Ocean Beach. Drop a magnet inside your plastic cup & wave bottom of the cup just above sand to attract minerals. Demo: อ่านเพิ่มเติม
Bring a magnet! We love to collect “black sand” or magnetic mineral magnetite at Ocean Beach. Drop a magnet inside your plastic cup & wave bottom of the cup just above sand to attract minerals. Demo: อ่านเพิ่มเติม