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.
| 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Denmark | 17.6 | 18.2 | 18.2 | 17.8 | 18.2 | 17.8 | 17.9 | 18.3 | 18.3 | 18.3 | 18.3 | 18.6 |
| Sweden | 7.0 | 8.0 | 8.0 | 8.2 | 15.2 | 15.2 | 15.4 | 15.4 | 15.8 | 15.8 | 15.8 | 16.0 |
| Finland | 9.7 | 11.0 | 11.0 | 11.1 | 10.5 | 10.5 | 12.1 | 12.0 | 12.0 | 12.0 | 12.0 | 11.8 |
| Norway | 0.4 | 0.5 | 0.5 | 0.7 | 0.8 | 0.8 | 0.8 | 1.5 | 9.9 | 9.8 | 1.4 | 1.0 |
| Iceland | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.4 | 0.5 |