| 礁 | [  ]    reef, shoal rock | 
| 礁島 | [ daǒ  ]    reef island | 
| 礁岛 | [ daǒ  ]    reef island | 
| 礁湖 | [ hú  ]    lagoon | 
| 礁湖星雲 | [ hú xīng yún  ]    Lagoon Nebula M8 | 
| 礁湖星云 | [ hú xīng yún  ]    Lagoon Nebula M8 | 
| 礁溪 | [ xī  ]    Jiaoxi or Chiaohsi Township in Yilan County 宜蘭縣|宜兰县[Yi2 lan2 Xian4], Taiwan | 
| 礁溪鄉 | [ xī xiāng  ]    Jiaoxi or Chiaohsi Township in Yilan County 宜蘭縣|宜兰县[Yi2 lan2 Xian4], Taiwan | 
| 礁溪乡 | [ xī xiāng  ]    Jiaoxi or Chiaohsi Township in Yilan County 宜蘭縣|宜兰县[Yi2 lan2 Xian4], Taiwan | 
| 礁石 | [ shí  ]    reef | 
| ⇒ 堡礁 | [ baǒ  ]    barrier reef | 
| ⇒ 大堡礁 | [ dà baǒ  ]    Great Barrier Reef, Queensland, Australia | 
| ⇒ 斯卡伯勒礁 | [ sī kǎ bó lè  ]    Scarborough Shoal (Philippines' name for Huangyan Island) | 
| ⇒ 暗礁 | [ àn  ]    submerged reef (rock) | 
| ⇒ 淺礁 | [ qiǎn  ]    shallow reef, shoal | 
| ⇒ 浅礁 | [ qiǎn  ]    shallow reef, shoal | 
| ⇒ 牛軛礁 | [ niú è  ]    Niu'e Reef, disputed territory in the South China Sea, claimed by China, Vietnam and the Philippines, aka Whitsun Reef or Julian Felipe Reef | 
| ⇒ 牛轭礁 | [ niú è  ]    Niu'e Reef, disputed territory in the South China Sea, claimed by China, Vietnam and the Philippines, aka Whitsun Reef or Julian Felipe Reef | 
| ⇒ 珊瑚礁 | [ shān hú  ]    coral reef | 
| ⇒ 環礁 | [ huán  ]    atoll | 
| ⇒ 环礁 | [ huán  ]    atoll | 
| ⇒ 觸礁 | [ chù  ]    (of a ship) to strike a reef, (fig.) to hit a snag | 
| ⇒ 触礁 | [ chù  ]    (of a ship) to strike a reef, (fig.) to hit a snag |