| km | Borders | Country | % Correct |
|---|---|---|---|
| 4 | Mediterranean Sea | Monaco | 98%
|
| 20 | Adriatic Sea | Bosnia and Herzegovina | 96%
|
| 47 | Gulf of Trieste | Slovenia | 88%
|
| 121 | Gulf of Guinea | Benin | 85%
|
| 273 | Mediterranean Sea and Red Sea | Israel | 85%
|
| 56 | Gulf of Guinea | Togo | 85%
|
| 80 | Atlantic Ocean | Gambia | 83%
|
| 294 | Adriatic Sea | Montenegro | 83%
|
| 67 | North Sea | Belgium | 81%
|
| 310 | Black Sea | Georgia | 80%
|
| 225 | Mediterranean Sea | Lebanon | 79%
|
| 58 | Persian Gulf | Iraq | 76%
|
| 26 | Gulf of Aqaba | Jordan | 76%
|
| 90 | Baltic Sea | Lithuania | 76%
|
| 296 | Gulf of Guinea | Equatorial Guinea | 75%
|
| 225 | Black Sea | Romania | 71%
|
| 37 | Atlantic Ocean | D. R. Congo | 68%
|
| 307 | Pacific Ocean | El Salvador | 66%
|
| 193 | Mediterranean Sea | Syria | 66%
|
| 169 | Atlantic Ocean | Republic of the Congo | 51%
|