
Socotra Rock

Socotra Rock (China:苏岩礁;) is a submerged rock 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) cannot be claimed as territory by any nation. However, the rock is the subject of a maritime dispute between South Korea and China, which consider it to lie within their respective exclusive economic zones.
The rock is located southwest of Marado (just off Jeju Island) in Korea. Yushan Island of Zhejiang, China, is away from the rock. The rock serves as the foundation for Korean Ieodo Ocean Research Station. A Korean helipad is also located there to allow the research station to be serviced.
Names.
In Korean, the rock itself is known as Ieodo or Parangdo. Internationally it is known as Socotra Rock, and in Chinese, it is known as Suyan Islet (), which means the "rock" (岩/巖, yán) or "reef" (礁, jiāo) outside the coastal waters of Jiangsu (苏/蘇, sū, the abbreviation).
History.
Both "Parangdo" and "Ieodo" are names for the mythical island which the residents of Jeju Island believed housed the spirits of fishermen who perished at sea. The South Korean government has asserted a direct connection between these legends and the modern-day rock, claiming that the traditional saying that "One who sees Parangdo would never return" refers to the danger facing sailors when high waves allow the rock to break the surface. 
Koreans even name the studies about Ieodo as "Ieodology".
Socotra Rock's Korean name was officially designated as "Ieodo" on 26 January 2001, by the Korea Institute of Geology.
Dispute.
According to the United Nations Convention on the Law of the Sea, a submerged reef can not be claimed as territory by any country. However, China and South Korea dispute which is entitled to claim it as part of the Exclusive Economic Zone (EEZ).
In September 2006, the Chinese Foreign Ministry spokesman Qin Gang () stated that China regarded South Korea's "unilateral" activities in the region, referring to Korean scientific observatories on Socotra, to be "illegal", but that there was no "territorial dispute"; no islands were mentioned. In a 2013 clarification, China stated that it had no dispute with Korea over the issue.