Ocean ecosystems play a critical role in carbon ... Some plankton combine calcium and dissolved carbonates to form a calcium carbonate protective coating like the shells and other body parts ...

Exclusive photos reveal a sprawling, 300-year-old coral near Solomon Islands, recently discovered by the National Geographic ...

Planktonic foraminifera are single-celled organisms living in seawater, many of which carry a calcium carbonate shell. In ...

The international BIOCAL expedition, led by the Institute of Environmental Science and Technology of the Universitat Autònoma ...

Planktonic foraminifera are tiny marine organisms, which are essential to the ocean's carbon cycle. A recent study reveals that these populations are shrinking at an alarming rate due to ocean warming ...

Ocean acidification can negatively affect marine life, causing organisms' shells and skeletons made from calcium carbonate to dissolve. The more acidic the ocean, the faster the shells dissolve. By ...

Over time, more hydrogen ions and fewer carbonate ions cause the ocean to trend towards acidity. Some marine organisms, such as oysters and corals, need calcium and carbonate — or salt molecules made ...

The rising CO₂ levels and ocean acidification also reduce the formation of calcium carbonate (CaCO₃) from which foraminifera build their shells. Since the empty shells of deceased plankton ...

Found all over the world, calcite is the most stable form of calcium carbonate and is the main mineral found in limestone. We find calcite in the ocean, in shells or hard parts of marine organisms ...

When CO2 dissolves in the ocean, it raises the water's acidity level. This prevents a build up of calcium carbonate, which corals draw from seawater to build their skeleton. The study, published ...

Ocean acidification is when the ocean's pH level decreases due to absorbed carbon dioxide from the atmosphere. Corals use calcium carbonate from the water to create their skeleton, so when the ...