Galapagos Ecuador
Northest island of Calapagos called "Dawin Island" on which nobody is allowed to land.
Underwater .... a lots of Whale Shark, Manta Ray etc.
Whale Shark touched me gently
4 meter wide Manta is 1 meter above me.
Jieddah Saudi Arabia ( Red Sea )
Yucatan Cenote (wet cave) Mexico
Okinoerabu (dry cave) Japan