- 海水不可斗量 hǎishuǐbùkědǒuliáng don't judge a person by appearanceyou cannot judge a person by their appearance, just as the sea cannot be measured with a small bucket; do not underestimate others
- 海水浴 hǎishuǐyù sea bathingseawater bath; to swim in or soak the body in seawater for exercise or health benefit
- 海水养殖 hǎishuǐyǎngzhí mariculturemariculture; sea farming; saltwater aquaculture
- 海水化淡 hǎishuǐhuàdàn seawater desalinationthe process of removing salt and other minerals from seawater to produce fresh water
- 海水浴场 hǎishuǐyùchǎng bathing beachA place at the seaside set up for people to go swimming; bathing beach
- 海水淡化 hǎishuǐdànhuà seawater desalinationThe process of removing salt and minerals from seawater to produce fresh water suitable for drinking or industrial use.
- 海水脱盐 hǎishuǐtuōyán seawater desalinationthe process of removing salt and other minerals from seawater to produce fresh water
- 临海水土志 línhǎishuǐtǔzhì Seaboard Geographic GazetteerThe Seaboard Geographic Gazetteer, a historical geography book written around 275 AD by [[沈莹|沈瑩|shen3 ying2]] during the Three Kingdoms period
- 海水面 hǎishuǐmiàn sea levelThe level of the ocean's surface, used as a baseline for measuring height and depth.
- 人不可貌相，海水不可斗量 rénbùkěmàoxiànghǎishuǐbùkědǒuliáng you can't judge a book by its cover(idiom) you cannot judge a person by appearance, just as you cannot measure the sea with a small container; one should not underestimate others based on their looks or status
- 海水倒灌 hǎishuǐdàoguàn saltwater intrusionThe inward flow of seawater into low-lying coastal areas or river estuaries, often caused by tides, storms, or sinking land levels.
