I think it is because in the ocean the plankton produces most of the oxygen which is used by aquatic plants and plankton is a primary producer known as autotrops.
Explanation:
Scientists indicate that high levels of CO2 can affect the way fish behave, so that they swim towards the odors of predators instead of maintaining distances and even perceive sounds that normally deter them from going to habitats of risk. These abnormal behaviors are related to the effect of carbon dioxide on how the brain processes signals from sensory organs.
In a way yes but in a way no hope i answerd your question
