It has dissolved oxygen.
No, humans cannot breathe in super oxygenated water. Our respiratory system is designed for breathing air, not water. Breathing super oxygenated water would not provide the necessary oxygen to our lungs and bloodstream.
Yes. There is no benefit to drinking "oxygenated" water.
because the gas under the ocean that sinks ships and air craft is oxygenated in the water.
No. At least so long as nothing else has been added to it.
Yes they do
Oxygen can become dissolved in water.
Breathing. Inhaling oxygenated air through our nostrils.
Air is roughly 80% Nitrogen and 20% Oxygen.
It might simply mean that the water is low in Oxygen and needs replacing with fresh, oxygenated water.
Blood becomes oxygenated when you breath and air goes in to your longs and thn true your blood. That is all
because of your mass, you weigh more then the water and you sink, now the oxygenated red blood makes you float more and the air in your lungs also help you float.
You get Pi water from your tap. Pi water is pseudoscientific bunk.