Embark on a two-hour boat adventure tracing the rugged volcanic coastline of the Te Whanganui-A-Hei Marine Reserve. Cruise through Mercury Bay’s waters, learning of its rich history as you weave between sandstone islands and behold the white rock archway of Cathedral Cove. Fill your afternoon on the sea with views of natural wonders, including Lonely Bay, Cooks Beach, Orua Sea Cave, and a stop at beautiful Gemstone Bay.