noun
Refers to water from the sea, often in contrast to freshwater. Can be used in contexts like cooking, bathing, or describing the ocean.
潮水でうがいをすると喉にいいと言われている。
Gargling with seawater is said to be good for the throat.
この辺りの潮水はとてもきれいだ。
The seawater around here is very clean.