| Cook Islands | Not Started - Seeking Researchers | | |
| Costa Rica | Not Started - Seeking Researchers | | |
| Côte d'Ivoire | Not Started - Seeking Researchers | | |
| Croatia | In Process - Seeking Additional Researchers | | |
| Cuba | Not Started - Seeking Researchers | | |
| Curaçao | Not Started - Seeking Researchers | | |
| Cyprus | Complete / Up to Date | 08/01/2021 | 08/01/2023 |
| Czech Republic | Not Started - Seeking Researchers | | |
| Denmark | Not Started - Seeking Researchers | | |
| Djibouti | Not Started - Seeking Researchers | | |
| Dominica | Not Started - Seeking Researchers | | |
| Dominican Republic | Not Started - Seeking Researchers | | |
| Ecuador | Not Started - Seeking Researchers | | |
| Egypt | In Process - Seeking Additional Researchers | | |
| El Salvador | Not Started - Seeking Researchers | | |
| Equatorial Guinea | Not Started - Seeking Researchers | | |
| Eritrea | Not Started - Seeking Researchers | | |
| Estonia | Not Started - Seeking Researchers | | |
| Eswatini (Swaziland) | Not Started - Seeking Researchers | | |
| Ethiopia | In Process - Seeking Additional Researchers | | |
| Falkland Islands | Not Started - Seeking Researchers | | |
| Faroe Islands | Not Started - Seeking Researchers | | |
| Fiji | Not Started - Seeking Researchers | | |
| Finland | Complete / Up to Date | 08/03/2021 | 08/03/2023 |
| France | Not Started - Seeking Researchers | | |
| French Guiana | Not Started - Seeking Researchers | | |
| French Polynesia | Not Started - Seeking Researchers | | |
| French Southern Territories | Not Started - Seeking Researchers | | |
| Gabon | Not Started - Seeking Researchers | | |
| Gambia | Not Started - Seeking Researchers | | |
| Georgia | In Process - Seeking Additional Researchers | | |
| Germany | In Process - Seeking Additional Researchers | | |
| Ghana | In Process - Seeking Additional Researchers | | |
| Gibraltar | Not Started - Seeking Researchers | | |
| Greece | Not Started - Seeking Researchers | | |
| Greenland | Not Started - Seeking Researchers | | |
| Grenada | Not Started - Seeking Researchers | | |
| Guadeloupe | Not Started - Seeking Researchers | | |
| Guam | Not Started - Seeking Researchers | | |
| Guatemala | Not Started - Seeking Researchers | | |
| Guernsey | Not Started - Seeking Researchers | | |
| Guinea | Not Started - Seeking Researchers | | |
| Guinea-Bissau | Not Started - Seeking Researchers | | |
| Guyana | Not Started - Seeking Researchers | | |
| Haiti | In Process - Seeking Additional Researchers | | |
| Heard and McDonald Islands | Not Started - Seeking Researchers | | |
| Holy See | Not Started - Seeking Researchers | | |
| Honduras | Not Started - Seeking Researchers | | |
| Hong Kong | Not Started - Seeking Researchers | | |
| Hungary | In Process - Seeking Additional Researchers | | |