"Archaeologist Mate Parica was examining satellite images of Croatia's coastline when he spotted something unusual.
"'I thought: maybe it is natural, maybe not,' said Parica, a professor at the University of Zadar.
"The image showed a large, shallow area on the seabed jutting out from the eastern shore of the island of Korcula.
"Parica and a colleague decided to dive at the site and discovered what they believe is a Neolithic settlement from around 4,500 years BC, built on a small piece of land that was connected to the main island by a narrow strip." Source: Reuters.