| km² | Bordering via... | Country | % Correct |
|---|---|---|---|
| 9,984,670 | directly | Canada | 99%
|
| 9,526,468 | directly | United States | 99%
|
| 8,514,877 | directly | Brazil | 97%
|
| 1,964,375 | Gulf of Mexico | Mexico | 94%
|
| 17,098,242 | Baltic Sea, Black Sea | Russia | 92%
|
| 2,780,400 | directly | Argentina | 88%
|
| 1,221,037 | directly | South Africa | 78%
|
| 2,381,741 | Mediterranean Sea | Algeria | 74%
|
| 1,246,700 | directly | Angola | 68%
|
| 1,759,540 | Mediterranean Sea | Libya | 66%
|
| 1,002,450 | Mediterranean Sea | Egypt | 65%
|
| 2,344,858 | directly | D.R. Congo | 64%
|
| 1,141,748 | Caribbean Sea | Colombia | 63%
|
| 923,768 | Gulf of Guinea | Nigeria | 62%
|
| 1,030,700 | directly | Mauritania | 58%
|