This layer shows the lines on the map corresponding to boundaries between land and water. This includes continental borders, seas, lakes, islands, and rivers. As this is a world map, including a layer for the continents and oceans was essential, yet it is important to emphasize that the continents aren’t just land masses: they have complex water systems in and around them. Additionally, many of these land/water boundaries are missing, incomplete, or even incorrect. These include Eastern Australia, the Northwest of North America, and the island of California.
