A group of scientists set sail in a new expedition aimed at unlocking the secrets of the lost continent ‘Zealandia’. The lost continent, which is mostly submerged, is said to have sunk after breaking away from Australia 60-85 million years ago. In a paper published in the Geological Society of America’s journal GSA Today in February 2016, scientists argued that the Earth has a hidden eighth continent, which should be reflected on the maps. The researchers said that the submerged continent met all the criteria applied to Earth’s other continents including elevation above the surrounding area, distinctive geology, a well-defined area and a crust much thicker than that found on the ocean floor.