Ocean chemistry is the study of the chemical composition and properties of seawater. It involves understanding the various elements and compounds found in the ocean, such as salts, gases, and nutrients. These components play a crucial role in marine life, influencing everything from the growth of phytoplankton to the health of coral reefs. The ocean is also a major player in the global climate system. It absorbs carbon dioxide from the atmosphere, which affects ocean acidity and can impact marine ecosystems. By studying ocean chemistry, scientists can better understand how human activities, like pollution and climate change, are altering the ocean's delicate balance.