| # | Flag | Country | Marine protected areas (% of territorial waters)Marine protected areas (% of territorial waters) | Year |
|---|---|---|---|---|
| 1 | Slovenia | 213.42509% | 2018 | |
| 2 | Monaco | 99.832% | 2018 | |
| 3 | New Caledonia | 96.59334% | 2018 | |
| 4 | Saint Martin | 96.4019% | 2018 | |
| 5 | Palau | 82.98763% | 2018 | |
| 6 | Germany | 45.3574% | 2018 | |
| 7 | France | 45.0458% | 2018 | |
| 8 | United States | 41.05741% | 2018 | |
| 9 | Australia | 40.55941% | 2018 | |
| 10 | Belgium | 36.65524% | 2018 | |
| 11 | Jordan | 35.59091% | 2018 | |
| 12 | Northern Mariana Islands | 33.25069% | 2018 | |
| 13 | New Zealand | 30.37111% | 2018 | |
| 14 | United Kingdom | 28.87331% | 2018 | |
| 15 | Gabon | 28.82718% | 2018 | |
| 16 | Chile | 28.81445% | 2018 | |
| 17 | Netherlands | 26.67469% | 2018 | |
| 18 | Brazil | 26.62411% | 2018 | |
| 19 | Lithuania | 25.59103% | 2018 | |
| 20 | Romania | 23.09631% | 2018 | |
| 21 | Poland | 22.57182% | 2018 | |
| 22 | Mexico | 21.78202% | 2018 | |
| 23 | Estonia | 18.62044% | 2018 | |
| 24 | Dominican Republic | 17.95791% | 2018 | |
| 25 | Denmark | 17.84899% | 2018 | |
| 26 | Colombia | 17.06989% | 2018 | |
| 27 | Portugal | 16.56393% | 2018 | |
| 28 | Latvia | 16.03636% | 2018 | |
| 29 | Sudan | 15.96436% | 2018 | |
| 30 | Sweden | 15.21319% | 2018 | |
| 31 | Ecuador | 13.34617% | 2018 | |
| 32 | Gibraltar | 12.82173% | 2018 | |
| 33 | South Africa | 12.05646% | 2018 | |
| 34 | Kiribati | 11.8179% | 2018 | |
| 35 | United Arab Emirates | 11.27035% | 2018 | |
| 36 | Finland | 10.50996% | 2018 | |
| 37 | Belize | 10.07888% | 2018 | |
| 38 | Guinea-Bissau | 10.00941% | 2018 | |
| 39 | Italy | 8.79465% | 2018 | |
| 40 | American Samoa | 8.71588% | 2018 | |
| 41 | Sint Maarten | 8.69126% | 2018 | |
| 42 | Croatia | 8.54108% | 2018 | |
| 43 | Spain | 8.37411% | 2018 | |
| 44 | Japan | 8.23376% | 2018 | |
| 45 | Bulgaria | 8.10331% | 2018 | |
| 46 | The Bahamas | 7.92289% | 2018 | |
| 47 | Malta | 6.27005% | 2018 | |
| 48 | China | 5.40683% | 2018 | |
| 49 | Bangladesh | 5.35719% | 2018 | |
| 50 | Egypt | 4.95149% | 2018 | |
| 51 | Greenland | 4.51874% | 2018 | |
| 52 | Greece | 4.51787% | 2018 | |
| 53 | Cuba | 4.32495% | 2018 | |
| 54 | Honduras | 4.15707% | 2018 | |
| 55 | Mauritania | 4.15343% | 2018 | |
| 56 | Argentina | 3.79699% | 2018 | |
| 57 | Venezuela | 3.48596% | 2018 | |
| 58 | Ukraine | 3.41516% | 2018 | |
| 59 | Cameroon | 3.40964% | 2018 | |
| 60 | Republic of the Congo | 3.2117% | 2018 | |
| 61 | Indonesia | 3.05732% | 2018 | |
| 62 | Tanzania | 3.01503% | 2018 | |
| 63 | Turkmenistan | 2.99386% | 2018 | |
| 64 | Russia | 2.97456% | 2018 | |
| 65 | Nicaragua | 2.97423% | 2018 | |
| 66 | Albania | 2.71803% | 2018 | |
| 67 | Saudi Arabia | 2.4941% | 2018 | |
| 68 | Republic of Ireland | 2.33211% | 2018 | |
| 69 | Myanmar | 2.32705% | 2018 | |
| 70 | Mozambique | 2.23203% | 2018 | |
| 71 | Thailand | 1.88138% | 2018 | |
| 72 | Puerto Rico | 1.7472% | 2018 | |
| 73 | Namibia | 1.7142% | 2018 | |
| 74 | Qatar | 1.68233% | 2018 | |
| 75 | Panama | 1.68142% | 2018 | |
| 76 | South Korea | 1.63364% | 2018 | |
| 77 | Malaysia | 1.54462% | 2018 | |
| 78 | Suriname | 1.54322% | 2018 | |
| 79 | Tonga | 1.50514% | 2018 | |
| 80 | Kuwait | 1.47928% | 2018 | |
| 81 | East Timor | 1.37435% | 2018 | |
| 82 | Bahrain | 1.24224% | 2018 | |
| 83 | Philippines | 1.15906% | 2018 | |
| 84 | Senegal | 1.11483% | 2018 | |
| 85 | Kazakhstan | 1.04921% | 2018 | |
| 86 | Tunisia | 1.03552% | 2018 | |
| 87 | Fiji | 0.92488% | 2018 | |
| 88 | Guatemala | 0.90014% | 2018 | |
| 89 | Canada | 0.87188% | 2018 | |
| 90 | Virgin Islands (US) | 0.85007% | 2018 | |
| 91 | Costa Rica | 0.83345% | 2018 | |
| 92 | Norway | 0.83078% | 2018 | |
| 93 | Iran | 0.80455% | 2018 | |
| 94 | Kenya | 0.80418% | 2018 | |
| 95 | Pakistan | 0.76653% | 2018 | |
| 96 | Jamaica | 0.7546% | 2018 | |
| 97 | Madagascar | 0.74618% | 2018 | |
| 98 | Uruguay | 0.71604% | 2018 | |
| 99 | El Salvador | 0.70545% | 2018 | |
| 100 | Georgia | 0.66776% | 2018 | |
| 101 | Libya | 0.63643% | 2018 | |
| 102 | Vietnam | 0.56089% | 2018 | |
| 103 | Sierra Leone | 0.53756% | 2018 | |
| 104 | Guinea | 0.52957% | 2018 | |
| 105 | Peru | 0.48153% | 2018 | |
| 106 | Yemen | 0.46757% | 2018 | |
| 107 | Azerbaijan | 0.43693% | 2018 | |
| 108 | Iceland | 0.38034% | 2018 | |
| 109 | Marshall Islands | 0.2688% | 2018 | |
| 110 | Morocco | 0.25998% | 2018 | |
| 111 | Syria | 0.24698% | 2018 | |
| 112 | Democratic Republic Of Congo | 0.23644% | 2018 | |
| 113 | Equatorial Guinea | 0.23512% | 2018 | |
| 114 | Saint Vincent and the Grenadines | 0.2201% | 2018 | |
| 115 | Saint Lucia | 0.21855% | 2018 | |
| 116 | Lebanon | 0.21143% | 2018 | |
| 117 | Brunei | 0.2011% | 2018 | |
| 118 | Togo | 0.19965% | 2018 | |
| 119 | Papua New Guinea | 0.19048% | 2018 | |
| 120 | Cambodia | 0.18577% | 2018 | |
| 121 | Antigua and Barbuda | 0.1815% | 2018 | |
| 122 | India | 0.17071% | 2018 | |
| 123 | Saint Kitts And Nevis | 0.1699% | 2018 | |
| 124 | Djibouti | 0.16787% | 2018 | |
| 125 | Oman | 0.12319% | 2018 | |
| 126 | Cyprus | 0.12272% | 2018 | |
| 127 | Solomon Islands | 0.11806% | 2018 | |
| 128 | Turkey | 0.10557% | 2018 | |
| 129 | Dominica | 0.10528% | 2018 | |
| 130 | Liberia | 0.10334% | 2018 | |
| 131 | Ghana | 0.09741% | 2018 | |
| 132 | Turks And Caicos Islands | 0.09713% | 2018 | |
| 133 | Samoa | 0.0868% | 2018 | |
| 134 | Grenada | 0.08625% | 2018 | |
| 135 | Algeria | 0.08548% | 2018 | |
| 136 | Cayman Islands | 0.07767% | 2018 | |
| 137 | Sri Lanka | 0.07463% | 2018 | |
| 138 | Ivory Coast | 0.07457% | 2018 | |
| 139 | Gambia | 0.06968% | 2018 | |
| 140 | Maldives | 0.0515% | 2018 | |
| 141 | Trinidad and Tobago | 0.04891% | 2018 | |
| 142 | Seychelles | 0.0361% | 2018 | |
| 143 | Curacao | 0.03417% | 2018 | |
| 144 | Israel | 0.03255% | 2018 | |
| 145 | São Tomé and Príncipe | 0.02679% | 2018 | |
| 146 | Comoros | 0.02264% | 2018 | |
| 147 | North Korea | 0.02209% | 2018 | |
| 148 | Nigeria | 0.01671% | 2018 | |
| 149 | Federated States of Micronesia | 0.01577% | 2018 | |
| 150 | Singapore | 0.01318% | 2018 | |
| 151 | Guyana | 0.01271% | 2018 | |
| 152 | Faroe Islands | 0.01083% | 2018 | |
| 153 | Guam | 0.00907% | 2018 | |
| 154 | Tuvalu | 0.00848% | 2018 | |
| 155 | Vanuatu | 0.00764% | 2018 | |
| 156 | Barbados | 0.00585% | 2018 | |
| 157 | Angola | 0.00493% | 2018 | |
| 158 | French Polynesia | 0.00432% | 2018 | |
| 159 | Virgin Islands (British) | 0.00412% | 2018 | |
| 160 | Mauritius | 0.00388% | 2018 | |
| 161 | Montenegro | 0.00122% | 2018 | |
| 162 | Cape Verde | 0.00068% | 2018 | |
| 163 | Aruba | 0.0001% | 2018 | |
| 164 | Bermuda | 0.00006% | 2018 | |
| 165 | Eritrea | 0% | 2018 | |
| 166 | Benin | 0% | 2018 | |
| 167 | Isle Of Man | 0% | 2016 | |
| 168 | Bosnia and Herzegovina | 0% | 2018 | |
| 169 | Iraq | 0% | 2018 | |
| 170 | Haiti | 0% | 2018 |