海 hǎi sea
Made up of [氵 shuǐ water radical 85]Made with 10 strokes.
Derives from 'water' and an unending supply of mother's milk
Ancient small seal form 
Related characters
Also uses 氵 shuǐ component: 波 bō (wave) 法 fǎ (law) 港 gǎng (harbor) 汗 hàn (perspiration) 汉 hàn (chinese) 河 hé (river) 洪 hóng (flood) 湖 hú (lake) 活 huó (to live) 济 jì (to cross a river) 江 jiāng (river) 津 jīn (ferry crossing) 酒 jiǔ (wine) 满 mǎn (to fill) 没 méi (have not) 泡 pào (bubble) 汽 qì (steam) 浅 qiǎn (shallow) 清 qīng (clear) 涉 shè (to wade) 洗 xǐ (to wash) 演 yǎn (to develop) 渔 yú (fishing) 泽 zé (pool) 治 zhì (to rule) 洲 zhōu (region)
Different tone
咳 hāi (sound of sighing) 还 hái (still) 孩 hái (child) 亥 hài (12th earthly branch)Pronunciation
Sound file kindly provided by shtooka.net ➚ under a Creative Commons Attribution Share Alike License
Provinces
上海 Shanghai海南 Hainan
青海 Qinghai
Cities
珠海 Zhuhai, Guangdong海口 Haikou, Hainan
乌海 Wuhai, Inner Mongolia
海门 Haimen, Jiangsu
威海 Weihai, Shandong
上海 Shanghai City, Shanghai
北海 Beihai, Guangxi
琼海 Qionghai, Hainan
Proverbs
八仙过海,各显神通 bā xiān guò hǎi, gè xiǎn shén tōng Everyone has their own special skills to contribute刀山火海 dāo shān huǒ hǎi An extremely difficult and dangerous situation
凡人不可貌相, 海水不可斗量 fán rén bù kě mào xiàng, hǎi shuǐ bù kě dòu liàng Judging by appearance is dangerous
海纳百川 hǎi nà bǎi chuān We all share a common destiny
人不可貌相,海水不可斗量 rén bù kě mào xiàng, hǎi shuǐ bù kě dǒu liáng First appearances can be deceptive
人山人海 rén shān rén hǎi Huge crowds of people