Dr Susi ArnottThey don't do it for us, but thanks for the oxygen #algaedon - come find out more about bit.ly/SW2Deptford this afternoon at
https://www.creeksidecentre.org.uk/
https://www.creeksidecentre.org.uk/
BrightonWildlife@SusiArnott Good old Algae. I heard 30% of global CO2 went into the world's oceans as a carbon sink.
Likely 30% of oxygen comes out of the little green fellas, minus the small amount used by maritime fauna respiration.