What is Hydra Island, Republic of Greece? Thursday, July 05 2007 @ 04:09 PM JST Contributed by: tetujin60 Views: 10,808 Click to enlarge Poros Greek National Tourism Organization page October 3-10, 2005 Over confidence Hydra Taverna Saronic Islands Prologue Greece Stroll Epilogue Port of Piraeus-Port of Hydra Country name Greece Population 1,400 Access Kansai-Milan 12 hours 45 minutes Milan-Athens 2 hours 30 minutes Athens Piraeus Harbor-Hydra (High Speed Boat )1 hour 40 minutesMilan-Kansai 11 hours 40 minutes Currency Euro