This infographic describes both ocean and coastal acidification and how they can impact marine life such as corals and fish, along with what we can do to help.
For more information and to download the infographic, visit the NOAA Ocean Acidification Program.
We, as humans, are deeply connected to our ocean whether we realize it or not. Our ocean regulates climate like the heart regulates blood flow in our bodies. Humidity, rain, and temperature are all controlled by our ocean. Burning fossil fuels adds excess heat and carbon dioxide that disrupt this system and make it harder to maintain a stable climate.
Ocean Acidification: Our ocean absorbs excess carbon dioxide (CO2) when we burn fossil fuels to power cars and create electricity. This excess CO2 increases acidity in our ocean on a global scale.
CO2 is produced when using electricity, driving cars, and other industrial activities.
CO2 (carbon dioxide) + H2O (water) = increased acidity
The ocean absorbs CO2, which mixes with water and increases the acidity of the water. Carbonate, used by coral and shellfish to build their hard exteriors, becomes scarce when ocean acidity increases. Because many reef animals rely on coral for food and shelter, changing ocean chemistry can affect the entire coral reef ecosystem.
Increased ocean acidity reduces fish size and populations. Some fish grow slower and cannot reproduce as well. Others have more difficulty avoiding predators.
Coastal Acidification: Nutrients entering the water from land exacerbates acidification in near shore waters.
Concentrated nutrients from septic systems and fertilizer runoff into our ocean, carrying nitrogen and organic carbon that harm the marine ecosystem.
Plankton populations thrive in high nutrient environments and can become so dense that they block light from sun-dependent organisms like coral. When this algal bloom dies, the plankton sink and are broken down. The decay process depletes oxygen and adds nutrients, exacerbating changes in ocean chemistry and creating a challenging environment for marine life.
What can we do to help?
The NOAA Coral Reef Conservation Program was established in 2000 by the Coral Reef Conservation Act. Headquartered in Silver Spring, Maryland, the program is part of NOAA's Office for Coastal Management.
The Coral Reef Information System (CoRIS) is the program's information portal that provides access to NOAA coral reef data and products.
U.S. Coral Reef Task Force
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