Seawater Composition

Seawater is a complex mix of water and dissolved substances, mainly salts like sodium and chloride, which give it a salty taste. It contains about 3.5% dissolved salts by weight, with sodium chloride making up most of this. Additionally, seawater includes minerals such as magnesium, calcium, and potassium, as well as gases like oxygen and carbon dioxide. Small amounts of organic matter and nutrients are also present, supporting marine life. The composition can vary depending on location, depth, and environmental factors, but overall, seawater’s unique mix of salts and minerals is essential for ocean ecosystems.