Surface    |    10m    |    20m    |    30m    |    narced  

narced is a reversible alteration in consciousness that occurs while scuba diving at depth

 

Near the surface air breathers play. In air oxygen is about one in five molecules, in sea water oxygen is only about 4 in every thousand million molecules. Above the surface is a high energy domain of oxygen and sunlight.

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Curious seal observes with underwater eyes.

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Superior seal swims with acrobatic ease.

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Clumsy amongst the seals human is envious.

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