Enclose yourself in a dark room

The Underwater

Innumerable oxygen molecules ride the undulating tides.

A bit like carbonated water is impregnated by gas,

seawater is aerated by the photosynthesis of aquatic plants.

Have you ever swum in sparkling water?

Then again too high or two low dissolved oxygen levels harm aquatic life.

Seawater species should avoid club soda and the dead zones of the globe:

the Gulf of Mexico, the North Sea, the Baltic Sea and the East China Sea.