Describing water that is saltier than freshwater but less salty than seawater, typically found in estuaries and coastal areas. Brackish water usually contains 0.5 to 30 parts per thousand of dissolved salts.
From Dutch 'brak' meaning 'salty' or 'briny,' which entered English in the 16th century. The word originally described any slightly salty water that was unfit for drinking, evolving to its current technical meaning in ecology and hydrology.
Brackish waters are nature's mixing zones where rivers meet the sea, creating some of Earth's most productive ecosystems! These transitional waters support incredible biodiversity, from salt-tolerant plants like mangroves to fish that can adjust their body chemistry as salinity changes with the tides.
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