A worker from the Israel Antiquities Authority photographs Fatimid period gold coins that were found in the seabed in the Mediterranean Sea near the port of Caesarea National Park in Caesarea, Israel, Wednesday, Feb. 18, 2015. A group of amateur Israeli divers have stumbled upon the largest collection of medieval gold coins ever found in the country, dating back to the 11th century and likely from a shipwreck in the Mediterranean Sea. (AP Photo/Ariel Schalit)

