Earth might not have seven continents after all. From an early age, most of us are taught to recognize seven continents: ...
If you are looking at a traditional world map, you won't get an accurate idea of the size of the seven continents; depicting a sphere onto a flat surface means that something will end up distorted.
The continent contains no countries ... Flat, two-dimensional maps can look different because the world is actually curved. This means map-makers need to make compromises when drawing maps.