Relationship between ocean temperature change  and aquatic ecosystems

Water temperature due to global warming was 1.4 degrees upward over the past 40 years. Oceans are becoming acidic because of carbon dioxides flowing into the sea. These changes can result in changes to the ecosystem, The problem is that we have lack of awareness of the urgency, don't know how to respond appropriately. So we study impacting of aquatic ecosystems and following the attempt to identify changes in the aquatic ecosystems due to global warming.