Blue hole is a term which often is given to sinkholes
filled with water, with the entrance below the water
level. Dean's Blue Hole is the world's deepest known
blue hole with seawater. It plunges 202 metres 663 ft)
in a bay west of Clarence Town on Long Island, Bahamas
and is a popular place for freediving. I used harp
sounds for the mp3 to provide the feeling of being deep
in the ocean.
PARTITION