There was an island called Ferdinandea between Sicily and Tunisia in 1831. It was formed of volcanic material. It was in a strategical position for any naval power. When the tug-of-war for sovereignty between four powerful nations began, the island had sunk back into the sea, unable to withstand the ocean waves. Since 1863, Ferdinandea Island has been lying 8 metres below the sea level–within scrapping distance of the hull of a ship. In 2000, renewed seismic activity around led volcanologists to speculate that the seamount might once again become an island. Should the island emerge again it would rightly belong to Italy.