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: TWA
Zone: Cabo Catoche to Puerto Morelos (inc. Isla Contoy, Mujeres)

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ZoneZone Code listGeographic ReportNameHave Coordinates?
54010001Geographic ReportUltrafreezeYes
54010002Geographic ReportCave of the Sleeping SharksYes
54010003Geographic ReportCuevonesYes
54010004Geographic ReportEl TunelNo
54010005Geographic ReportCachetesNo
54010006Geographic ReportTulumNo
54010007Geographic ReportPunta NorteNo
54010008Geographic ReportMedia LunaNo
54010009Geographic ReportManchonesYes
54010010Geographic ReportPunta SurYes
54010011Geographic ReportEl GarrafonNo
54010013Geographic ReportIxlache Grande / Isla Che Reef, near Contoy IslandYes
54010014Geographic ReportPatarera Central, Contoy IslandYes
54010015Geographic ReportPlaya Norte, Contoy IslandYes
54010016Geographic ReportBoca Puerto Viejo Sotavento, Contoy IslYes
54010017Geographic ReportZona de Redes Sotavento, Contoy IslYes
54010018Geographic ReportSanto Remedio (Cancun)No
54010019Geographic ReportPunta Negra (Cancun)Yes
54010020Geographic ReportCancun Mecoloco ReefNo
54010021Geographic ReportPunta Nizuc ReefNo
54010022Geographic ReportAtlantis Reef (adjacent site to Manchones 54010009Yes
54010023Geographic ReportC-58 Wreck (Cancun)Yes
54010024Geographic ReportPiedra Atravezada, Isla MujeresYes
54010025Geographic ReportBridges and Caves, Isla MujeresYes
54010026Geographic ReportWhale Shark Site at Isla de MujeresYes
54010027Geographic ReportBandera ReefYes
54010028Geographic ReportNo Name Reef in CancunYes
54010029Geographic ReportMuseo / Museum - Isla MujeresYes
54010030Geographic ReportAvalon Hotel Area - Isla MujeresYes
54010031Geographic ReportLost Dive SiteYes
54010032Geographic ReportPailusYes
54010033Geographic ReportCross of the BayYes
54010034Geographic ReportSan ToribioYes
54010035Geographic ReportManchones 2Yes
54010036Geographic ReportWhale Shark site 16 miles NNE of Isla ContoyYes
54010037Geographic ReportGrampin ReefYes
54010038Geographic ReportAristosYes
54010039Geographic ReportGarrafon de Castilla Hotel beach (Isla Mujeres)Yes
54010040Geographic ReportLa Herradura (The Horseshoe)Yes
54010041Geographic ReportChitalesYes
54010042Geographic ReportRodmanYes
54010043Geographic ReportRadio PirataYes
54010044Geographic ReportNurseries Oceanus (Puerto Morelos)No
54010045Geographic ReportChairel - Sunken Car FerryYes
54010046Geographic ReportHondurenoYes
54010047Geographic ReportLa Cadenita / The Little ChainYes
54010048Geographic ReportCuevas de AfueraYes
54010049Geographic ReportLos PicosYes
54010050Geographic ReportC-55 WreckYes
54010051Geographic ReportEl Pez Vela Encuentro (Sailfish Encounter) Yes
54010052Geographic ReportRockmanYes
54010053Geographic ReportCueva de TiburonYes
54010054Geographic ReportJardines 3Yes
54010055Geographic ReportLa ParedYes
54010056Geographic ReportFishmarketYes
54010057Geographic ReportEl PuenteYes
54010058Geographic ReportPuerto Morelos ReefYes
54010059Geographic Report12 Miles East of Isla ContoyYes
54010060Geographic ReportKin HaYes
54010061Geographic ReportCapitan DulcheYes
54010062Geographic ReportOjo de Agua (Puerto Morelos)Yes