Is Oxygen actually healthy and can sea creatures help in the war to combat global warming?

Some of the oxygen we breathe today is being produced because of viruses infecting
micro-organisms in the world's oceans.

These organisms are also responsible for
removing carbon dioxide from our
atmosphere and locking it away in their
bodies, which sink to the bottom of the
ocean when they die, removing it forever and limiting global warming.

At least a proportion of the oxygen we breathe is a by-product of the bacteria suffering from a virus infection, viruses appear to be of central importance in the planetary process. In fact they may be essential to our survival.