Antikythera is a Greek island. It is known for being the location of the discovery of the Antikythera mechanism and for the Antikythera wreck, a shipwreck from the 1st or 2nd century BC. It was discovered by sponge divers in the early 1900s. The wreck produced numerous statues and a mechanism, considered as the world's oldest known analog computer.
In October 1900, a team of sponge divers led by Captain Dimitrios Kondos began diving off the coastline of Antikythera island. At that time, divers wore as diving equipment a canvas suit and copper helmet, which allowed them to dive deeper and to stay submerged longer. "The first to lay eyes on the shipwreck 60 metres down was Elias Stadiatos, who quickly signaled to be pulled to the surface. He described the scene as a heap of rotting corpses and horses lying on the sea bed. Thinking the diver had gone mad from too much carbon dioxide in his helmet, Kondos himself dove into the water, soon returning with a bronze arm of a statue." more Wiki.
On 17 May 1902, archaeologist Valerios Stais made the most celebrated find. He was diving to search the area of the wreck and noticed that one of the pieces of rock near him had a gear wheel embedded in it. He found what is now known as the "Antikythera mechanism".