noun
coastal water; neritic water
Technical term in oceanography and marine science referring to water in the coastal zone, often contrasted with 外洋水 (open ocean water).
See also: 外洋水
沿岸水の温度は外洋水より変動しやすい。
The temperature of coastal water fluctuates more easily than that of open ocean water.
外洋水 refers to open ocean water, while 沿岸水 refers to water in the coastal zone.
Compound of 沿岸 (coast, coastal) and 水 (water).