The head of a Hercules statue has been found in the legendary 2,000-year-old Antikythera shipwreck.
Underwater archaeologists also found four other shipwrecks dating from several different historical periods.
The Minoan Civilization, which flourished on the Greek island of Crete in ancient times, is considered by many to be the birthplace of "high culture" in Europe.
Dhaskalio is a protected site and uninhabited today, but was once widely known for ritual activities.
You'd think people would have noticed earlier.
Already "deadliest January on record," International Organization for Migration says.
The cold winter months have not stopped refugees and migrants from attempting the journey.
The International Organization for Migration said the figure rose from 4,500 a day during September.
More than a quarter of a million refugees and migrants have arrived in Greece this year.
Greece has overtaken Italy as the main entry point for those seeking refuge or a better life in Europe.
Weekly arrivals of 5,000 migrants are putting Greece under enormous strain.