calcifying organisms

Calcifying organisms are living things that produce calcium carbonate, a hard mineral substance, as part of their structure. Examples include corals, mollusks (like clams and snails), and some plankton. They build shells, skeletons, or skeletal frameworks that provide support and protection. These organisms play a crucial role in marine ecosystems by forming coral reefs and contributing to ocean carbon cycling. Their ability to calcify is sensitive to changes in ocean chemistry, such as increased acidity, which can threaten their survival and, by extension, the health of associated ecosystems.