Table 1. Twenty-two nations from which REEF survey data were collected, including information of human population densities and sample sizes.
| Country/region | HPD | Code | Survey locations | Total surveys |
| Belize | 12 | BZ | 7 | 2304 |
| Bahamas | 21 | BA | 15 | 9457 |
| Turks and Caicos | 47 | TC | 10 | 3136 |
| Mexican Caribbean | 53 | MC | 5 | 5057 |
| Honduras | 62 | HD | 4 | 2124 |
| Cuba | 102 | CU | 3 | 567 |
| Leeward Islands | LI | 8 | 1819 | |
| --- Anguilla | 129 | 13 | ||
| --- Netherlands Antilles* | 131 | 600 | ||
| --- St. Kitts | 149 | 285 | ||
| --- Antigua | 155 | 27 | ||
| --- Dominica | 91 | 894 | ||
| British Virgin Islands | 147 | BV | 3 | 2196 |
| Cayman Islands | 168 | CI | 4 | 4499 |
| Dominican Republic | 183 | DR | 4 | 515 |
| Jamaica | 248 | JA | 5 | 384 |
| US Virgin Islands | 308 | UV | 3 | 2347 |
| Windward Islands | WI | 8 | 2635 | |
| --- Martinique | 359 | 163 | ||
| --- St. Lucia | 269 | 181 | ||
| --- St. Vincent & The Grenadines† | 302 | 1929 | ||
| --- Barbados | 647 | 173 | ||
| --- Grenada | 260 | 189 | ||
| Puerto Rico | 430 | PR | 7 | 1076 |
| TOTAL = 38116 |
*
Netherlands Antilles (St Martin, Saba, St Eustatius).
†
St Vincent & Grenadines (includes Bequia & Mustique).