Socotra Rock, also known as Ieodo (Hangul: 이어도; hanja: 離於島; MR: Iŏdo) or sometimes Parangdo (Hangul: 파랑도; hanja: 波浪島; MR: P'arangdo), is a submerged rock 4.6 metres (15 ft) below sea level (at low tide) located in the Yellow Sea. International maritime law stipulates that a submerged rock outside of a nation's territorial sea (generally 12 nautical miles) can't be claimed as territory by any nation. However, the rock is the subject of a maritime dispute between South Korea and China, which considers it to lie within its exclusive economic zone. And China refers to it as Suyan Rock (Chinese: 苏岩礁; pinyin: sūyánjiāo).