Continent with other islands in the Pacific into one continent called Oceania. This divides the entire land surface of Earth into continents or quasi-continents. The ideal criterion that each continent is a discrete landmass is commonly relaxed due to historical conventions. Of the seven most globally recognized continents, only Antarctica and Australia are completely separated from other continents by the ocean. Several continents are defined not as absolutely distinct bodies but as ""more or less" discrete masses of land". Asia and Africa are joined by the Isthmus of Suez, and North and South America by the Isthmus of Panama. In both
Karain semi-continent the continent is reputed to be unbroken jungle surrounding the river. The largest lake is at the headwaters of the Karain River, Lake M'Pulo. This in turn is fed by a number of large rivers (the Treacher, the Ono, the Turain, the Kasiholo, the Loborango, the M'Pulo, and the Puchiaihipopolobanjo), which are themselves fed by runoff from the mountain range that separates Islandia from the rest of Karain. The only city of note on lake M'Pulo is Todojil, and to its south and west is the massive Karain Swamp, which forms the upper end of the German Protectorate. The Karain