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: Yucatan, Mexico

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ZoneZone Code listGeographic ReportNameHave Coordinates?
2901Zone Code listGeographic ReportYucatan State
29010001Geographic ReportWhale Sharks, Yum Balam Protected Area (Holbox)Yes
29010002Geographic ReportCuevones, Yum Balam Protected AreaYes
2902Zone Code listGeographic ReportAlacranes Reef System
29020001Geographic ReportMorena Verde  (Isla Perez)Yes
29020002Geographic ReportHongos (Isla Perez)Yes
29020003Geographic ReportBoya Pronatura (Isla Perez)Yes
29020004Geographic ReportArcos (Desterrada)Yes
29020005Geographic ReportTweet / El TweedYes
29020006Geographic ReportCaribbean (Isla Perez)Yes
29020007Geographic Report Tabasco (Isla Perez)Yes
29020008Geographic Report Muertos (Isla Perez)Yes
29020009Geographic ReportHerraduraYes
29020010Geographic ReportCordillera de AbelYes
29020011Geographic ReportJuanchosYes
29020012Geographic ReportPerez Low (Isla Perez)No
29020013Geographic ReportLa CordilleraYes
29020014Geographic ReportLaguna (Isla Perez)Yes