| km | Borders | Country | % Correct |
|---|---|---|---|
| 4 | Mediterranean Sea | Monaco | 88%
|
| 20 | Adriatic Sea | Bosnia and Herzegovina | 79%
|
| 135 | Caribbean Sea | St. Kitts and Nevis | 74%
|
| 158 | Caribbean Sea | Saint Lucia | 73%
|
| 84 | Caribbean Sea | St. Vincent and the Grenadines | 71%
|
| 121 | Caribbean Sea | Grenada | 67%
|
| 153 | Caribbean Sea | Antigua and Barbuda | 66%
|
| 97 | Atlantic Ocean | Barbados | 63%
|
| 148 | Caribbean Sea | Dominica | 62%
|
| 90 | Baltic Sea | Lithuania | 62%
|
| 30 | Pacific Ocean | Nauru | 61%
|
| 47 | Gulf of Trieste | Slovenia | 59%
|
| 80 | Atlantic Ocean | Gambia | 57%
|
| 56 | Gulf of Guinea | Togo | 56%
|
| 67 | North Sea | Belgium | 54%
|
| 24 | Pacific Ocean | Tuvalu | 53%
|
| 121 | Gulf of Guinea | Benin | 52%
|
| 58 | Persian Gulf | Iraq | 48%
|
| 26 | Gulf of Aqaba | Jordan | 41%
|
| 37 | Atlantic Ocean | D. R. Congo | 32%
|