REEF uses a hierarchical 8-digit code system for survey site locations. Each geographic area has its own set of codes. When completing a survey, you need to know the complete 8-digit code for the site you surveyed.

If the site that you surveyed is not currently on our list, then please email zonecode@REEF.org to request a new code to be assigned. Please provide the site name, general location, and ideally the latitude and longitude.

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Region: CIP
Zone: Andaman Sea; Gulf of Thailand; China, Taiwan, Southern Japan

ZoneZone Code listGeographic ReportNameHave Coordinates?
61Zone Code listGeographic ReportAndaman Sea (Andaman and Nicobar Islands, W. Thailand, and Myanmar)
6101Zone Code listGeographic ReportNicobar Islands
6102Zone Code listGeographic ReportAndaman Islands
6103Zone Code listGeographic ReportMyanmar
610301Zone Code listGeographic ReportMoscos Islands (Tanintharyi Region)
610302Zone Code listGeographic ReportMergui Archipelago (Tanintharyi Region)
61030201Geographic ReportThree Islets / Shark CaveYes
61030202Geographic ReportRocky IslandYes
6104Zone Code listGeographic ReportSouthern Thailand
610401Zone Code listGeographic ReportSurin Islands
61040101Geographic ReportRichelieu RockYes
610402Zone Code listGeographic ReportSimilan Islands
61040201Geographic ReportKoh Bon / Koh Bon West RidgeYes
61040202Geographic ReportBreakfast BendYes
61040203Geographic ReportWest of EdenYes
61040204Geographic ReportAnita's ReefYes
61040206Geographic ReportKoh Tachai PinnacleYes
61040207Geographic ReportKoh Bon PinnacleYes
61040208Geographic ReportSouth of EdenYes
61040209Geographic ReportBeacon ReefYes
61040210Geographic ReportKoh Tachai ReefYes
61040211Geographic ReportDeep SixYes
61040212Geographic ReportElephant Rock / Elephant HeadYes
61040213Geographic ReportStonehengeYes
610403Zone Code listGeographic ReportPhuket and nearby islands
61040301Geographic ReportKoh Dok MaiYes
61040302Geographic ReportShark PointYes
61040303Geographic ReportKoh Bida NokYes
61040304Geographic ReportKoh Haa Nua #1 - The ChimneyYes
61040305Geographic ReportHin DaengYes
61040306Geographic ReportHin MuangYes
61040307Geographic ReportKoh Bida NaiYes
61040308Geographic ReportTurtle Bay Maya NorthNo
61040309Geographic ReportKoh Haa Yai #1 - The CathedralYes
61040310Geographic ReportKoh Haa Lagoon #4Yes
61040311Geographic ReportKoh Haa Rock #6No
61040312Geographic ReportMarita's Rock (Marina Bay - Racha Noi)Yes
61040313Geographic ReportRacha Noi BayYes
61040314Geographic ReportRacha Yai Bay 1 & 2Yes
61040315Geographic ReportKoh Haa #3Yes
61040316Geographic ReportKoh Haa Cave #5Yes
61040317Geographic ReportKled KaewYes
61040318Geographic ReportHin KlangYes
61040319Geographic ReportHin Bida / Shark PointYes
62Zone Code listGeographic ReportGulf of Thailand and South China Sea (E. Thailand, Cambodia, and Vietnam)
6201Zone Code listGeographic ReportEastern Thailand
620101Zone Code listGeographic ReportNarathiwat, Pattani, Songkhla, Nakhon Si Thammarat
620102Zone Code listGeographic ReportSurat Thani (incl. Koh Samui and Koh Tao)
62010201Geographic ReportTwin Peaks (Koh Tao)No
62010202Geographic ReportJapanese Gardens (Koh Tao)No
62010203Geographic ReportJunkyard Reef /Maehaad Reef (Koh Tao)No
62010204Geographic ReportMango Bay (Koh Tao)No
62010205Geographic ReportAow Leuk (Koh Tao)No
620103Zone Code listGeographic ReportChumphon
620104Zone Code listGeographic ReportPrachuap Khiri Khan, Phetchaburi
620105Zone Code listGeographic ReportSamut Songkhram - Chachoengsao
620106Zone Code listGeographic ReportChonburi (incl. Pattaya and Sattahip area)
620107Zone Code listGeographic ReportRayong Province
62010701Geographic ReportAlhambra Rock / Hin Alhambra WestYes
62010702Geographic ReportAlhambra Rock / Hin Alhambra EastYes
620108Zone Code listGeographic ReportChanthaburi Province
620109Zone Code listGeographic ReportTrat Province (incl. Koh Chang)
6202Zone Code listGeographic ReportCambodia
6203Zone Code listGeographic ReportVietnam
620301Zone Code listGeographic ReportNha Trang Bay Marine Protected Area
62030101Geographic ReportFisherman's BightYes
62030102Geographic ReportSmall RockYes
63Zone Code listGeographic ReportChina (South China Sea)
6301Zone Code listGeographic ReportHong Kong SAR
630101Zone Code listGeographic ReportNew Territories
63010101Geographic ReportShelter Island SouthYes
63010102Geographic ReportShelter Island NorthYes
63010103Geographic ReportBluff IslandYes
63010104Geographic ReportLung Wa Wan (shore dive)Yes
63010105Geographic ReportLong Ke Wan BayYes
63010106Geographic ReportConic IslandYes
63010107Geographic ReportLittle Palm Beach EastYes
63010108Geographic ReportLittle Palm Beach WestYes
63010109Geographic ReportBasalt Island SW sideYes
63010110Geographic ReportPort Island (Hong Kong)Yes
64Zone Code listGeographic ReportTaiwan
65Zone Code listGeographic ReportSouth Japanese Islands (incl. Yaeyama, Okinawa, Kagoshima, Daito)
6501Zone Code listGeographic ReportYaeyama Islands
650101Zone Code listGeographic ReportYonaguni Island
65010101Geographic ReportEast Channel of Sonai HarborYes
65010102Geographic ReportSonai Outer LagoonYes
650102Zone Code listGeographic ReportIriomote Island
65010201Geographic ReportHoshizuna BeachYes
65010202Geographic ReportIda (Funauki) BeachYes
65010203Geographic ReportMarumabon CoveYes
65010204Geographic ReportHaemida Beach (beach to outer reef edge)Yes
650103Zone Code listGeographic ReportKuroshima Island
65010301Geographic ReportNakamoto BeachYes
650104Zone Code listGeographic ReportIshigaki Island
65010401Geographic ReportYonehara BeachYes
6502Zone Code listGeographic ReportOkinawa Islands
650201Zone Code listGeographic ReportOkinawa Mainland
65020101Geographic ReportZampa Misaki / Bolo PointYes
65020102Geographic ReportMaeda FlatsYes
65020103Geographic ReportMaeda Point / Maeda MisakiYes
65020104Geographic ReportBig Time ResortYes
65020105Geographic ReportWater Treatment PlantYes
65020106Geographic ReportWater Treatment Plant #2Yes
65020107Geographic ReportSunabe Seawall / Curry HouseYes
65020108Geographic ReportSunabe Seawall / Arc DiveYes
65020109Geographic ReportSunabe Seawall JunkyardYes
65020110Geographic ReportRunway LightsYes
65020111Geographic ReportKadena NorthYes
65020112Geographic ReportJamsYes
65020113Geographic ReportKadena StepsYes
65020114Geographic ReportDevils CoveYes
65020115Geographic ReportMalibu BeachYes
65020116Geographic ReportOnna PointYes
65020117Geographic ReportHorse Shoe BeachYes
65020118Geographic ReportToilet BowlYes
65020119Geographic ReportSeragaki Inner ReefYes
65020120Geographic ReportSeregaki Outer ReefYes
65020121Geographic ReportGorilla ChopYes
65020122Geographic ReportEagle PipesYes
65020123Geographic ReportUSS EmmonsYes
65020124Geographic ReportOkuma NorthYes
65020125Geographic ReportHedo DomeYes
65020126Geographic ReportHedo MisakiYes
65020127Geographic ReportHedo Three PoolsYes
65020128Geographic ReportKin BlueYes
65020129Geographic ReportKin RedYes
65020130Geographic ReportTengan PierYes
65020131Geographic ReportMiyagiYes
65020132Geographic ReportMama San BeachYes
65020133Geographic ReportSouthern LinksYes
65020134Geographic ReportSuicide CliffsYes
65020135Geographic ReportChannel CrevassYes
650202Zone Code listGeographic ReportKerama Islands
650203Zone Code listGeographic ReportKume, Tonaki, Aguni Islands
6503Zone Code listGeographic ReportKagoshima Islands
6504Zone Code listGeographic ReportDaito Islands