A lost city found underwater in the Mediterranean Sea was revealed in a television documentary.
Known as Heracleion to the ancient Greeks and Thonis to the ancient Egyptians, the city was a port for both civilisations. It was found 6.4 kilometres off the coast of Egypt and nine metres below the Aboukir Bay. Experts at an Oxford University conference said the ancient city may have sunk due to the heavy structures being built on clay. Others believe an extreme flood may have sent this city into the water.