Marine protected areas are areas of intertidal or subtidal terrain--and overlying water and associated flora and fauna and historical and cultural features--that have been reserved by law or other effective means to protect part or all of the enclosed environment.
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | |
|---|---|---|---|---|---|---|---|
| Antigua and Barbuda | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.3 | 0.3 |
| Argentina | 4.0 | 3.8 | 3.8 | 11.8 | 11.8 | 11.8 | 11.8 |
| Barbados | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Belize | 10.1 | 10.1 | 10.1 | 10.1 | 11.0 | 11.0 | 11.0 |
| Brazil | 1.7 | 26.6 | 26.6 | 26.6 | 26.8 | 26.8 | 26.8 |
| Chile | 12.6 | 28.8 | 28.8 | 41.2 | 41.3 | 41.3 | 41.4 |
| Colombia | 2.1 | 17.1 | 17.1 | 17.1 | 17.2 | 17.2 | 17.1 |
| Costa Rica | 0.8 | 0.8 | 0.8 | 2.6 | 2.7 | 2.7 | 29.0 |
| Cuba | 4.3 | 4.3 | 4.3 | 3.9 | 3.9 | 3.9 | 3.9 |
| Dominica | 0.0 | 0.1 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 |
| Dominican Republic | 9.1 | 18.0 | 18.0 | 18.0 | 18.0 | 18.0 | 17.3 |
| Ecuador | 13.1 | 13.3 | 13.3 | 13.3 | 13.3 | 13.3 | 19.1 |
| El Salvador | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 |
| Grenada | 0.0 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| Guatemala | 0.8 | 0.9 | 0.9 | 0.9 | 0.8 | 0.8 | 0.8 |
| Guyana | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Haiti | 0.0 | 0.0 | 1.5 | 1.5 | 1.5 | 1.5 | |
| Honduras | 4.2 | 4.2 | 4.2 | 4.2 | 4.6 | 4.6 | 4.6 |
| Jamaica | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
| Mexico | 2.3 | 21.8 | 21.8 | 21.6 | 21.6 | 21.6 | 21.6 |
| Nicaragua | 2.9 | 3.0 | 3.0 | 3.0 | 3.4 | 3.4 | 3.4 |
| Panama | 1.7 | 1.7 | 1.7 | 1.7 | 11.6 | 26.8 | 26.8 |
| Peru | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 8.0 |
| Saint Kitts and Nevis | 0.2 | 0.2 | 0.2 | 4.0 | 4.0 | 4.0 | 4.0 |
| Saint Lucia | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Saint Vincent and the Grenadines | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 |
| Suriname | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 |
| Bahamas | 0.6 | 7.9 | 7.9 | 7.9 | 7.9 | 7.9 | 7.9 |
| Trinidad and Tobago | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Uruguay | 0.7 | 0.7 | 0.7 | 0.7 | 0.8 | 0.8 | 0.8 |
| Venezuela (Bolivarian Republic of) | 3.5 | 3.5 | 3.5 | 3.5 | 4.3 | 4.3 | 4.4 |
| Canada | 0.9 | 0.9 | 0.9 | 2.9 | 8.8 | 8.9 | 9.1 |
| United States of America | 41.1 | 41.1 | 41.1 | 41.1 | 37.4 | 19.0 | 19.0 |