| 1 | 海洋 | 海洋 | hǎi yáng | hai3 yang2 | Haiyang county level city in Yantai 烟台 , Shandong; ocean; Classifiers: 个 | | |
| 2 | 海水 | 海水 | hǎi shuǐ | hai3 shui3 | seawater | | |
| 3 | 海 | 海 | hǎi | Hai3 | ocean; sea; Classifiers: 个 ; great number of people or things; (dialect) numerous; surname Hai | | |
| 4 | 上海 | 上海 | shàng hǎi | Shang4 hai3 | Shanghai municipality, central east China, abbr. to 沪 | | |
| 5 | 沿海 | 沿海 | yán hǎi | yan2 hai3 | coastal | | |
| 6 | 海上 | 海上 | hǎi shàng | hai3 shang4 | maritime | | |
| 7 | 大海 | 大海 | dà hǎi | da4 hai3 | sea; ocean | | |
| 8 | 海军 | 海軍 | hǎi jūn | hai3 jun1 | navy | | |
| 9 | 海面 | 海面 | hǎi miàn | hai3 mian4 | sea level; sea surface | | |
| 10 | 海底 | 海底 | hǎi dǐ | hai3 di3 | seabed; seafloor; bottom of the ocean | | |
| 11 | 海岸 | 海岸 | hǎi àn | hai3 an4 | coastal; seacoast | | |
| 12 | 海拔 | 海拔 | hǎi bá | hai3 ba2 | height above sea level; elevation | | |
| 13 | 地中海 | 地中海 | dì zhōng hǎi | Di4 zhong1 Hai3 | Mediterranean Sea | | |
| 14 | 海外 | 海外 | hǎi wài | hai3 wai4 | overseas; abroad | | |
| 15 | 海南 | 海南 | hǎi nán | Hai3 nan2 | Hainan Province, in the South China Sea, short name 琼 , Qinghai | | |
| 16 | 海域 | 海域 | hǎi yù | hai3 yu4 | giant taro (Alocasia macrorrhizos); common calla; sea area; territorial waters; maritime space | | |
| 17 | 南海 | 南海 | nán hǎi | Nan2 Hai3 | South China Sea | | |
| 18 | 航海 | 航海 | háng hǎi | hang2 hai3 | sailing; navigation; voyage by sea | | |
| 19 | 上海市 | 上海市 | shàng hǎi shì | Shang4 hai3 shi4 | Shanghai municipality in southeast China, abbr. 沪 | | |
| 20 | 海关 | 海關 | hǎi guān | hai3 guan1 | customs (i.e. border crossing inspection); Classifiers: 个 | | |
| 21 | 东海 | 東海 | dōng hǎi | Dong1 Hai3 | East China Sea; East Sea (Chinese mythology and ancient geography) | | |
| 22 | 脑海 | 腦海 | nǎo hǎi | nao3 hai3 | the mind; the brain | | |
| 23 | 海南岛 | 海南島 | hǎi nán dǎo | Hai3 nan2 Dao3 | Hainan Island in South China Sea | | |
| 24 | 海湾 | 海灣 | hǎi wān | Hai3 wan1 | bay; gulf; (Persian) Gulf | | |
| 25 | 海瑞 | 海瑞 | hǎi ruì | Hai3 Rui4 | Hairui township in Taitung County 台东县 , southeast Taiwan; Hai Rui (1514-1587), Ming politician, famous for honesty and integrity | | |