Heading out to dive on Ferdinandea, a volcanic sea mount some 30 kilometres south of Sicily, Italy. The volcano occasionally rises above the surface due to volcanic activity. The last time it did so was in July 1831, when it was the subject of a sovereignty dispute between the UK, Sicily (then independent) and France, who called it Graham Island, Ferdinandea and Guilia respectively. Spain also claimed the island. This was a major diplomatic incident, but war was avoided when the island sunk below the waves some six months later. In 2001, this dive team, led by Domenico Macaluso, placed a plaque on the submerged island claiming it for Italy. The plaque was later found broken.