Calcium Carbonate Compensation Depth (CCD)

The Calcium Carbonate Compensation Depth (CCD) is the ocean depth at which the rate of calcium carbonate, a mineral found in shells and coral, dissolves faster than it accumulates. Below this depth, the water is more acidic due to higher carbon dioxide levels, preventing calcium carbonate from remaining intact. As a result, the CCD is crucial for understanding ocean chemistry and marine life, as it influences the distribution of organisms like shellfish and corals. It helps scientists gauge the health of marine ecosystems and the effects of climate change on ocean conditions.