Apart from being the largest marsh on earth, Okavango Delta is also the world's most precious wetland. The approximately-15,000 km2, fan-shaped delta is formed when the waters from the Okavango River flows into the Okavango Delta in Botswana. Each year, roughly 850 million cubic meters of water enters Okavango Delta (through five tributaries shaped like a palm); a portion of the water is used while some of it evaporates. However, the major portion of water remains in the delta as Okavango River has no outlet to the sea.
The Okavango River used to be commonly misunderstood as a legendary river of loss; for the longest time, people simply couldn't figure out how could such vast amount of water vanish at the 
Okavango Delta after it seeps through the sandy bottoms. However, the water at the Okavango River shows no sign of stagnation with clear, running water easily found at various places at the marshes, as the currents from the river never cease all year round. The Okavango Delta is practically a swamp-covered region where canal transportation is the only viable means of getting around. To experience and appreciate the vastness of Okavango Delta, you can either take a speedboat or the mokoro (a type of canoe propelled by a standing boatman using a long pole) to slowly advance through the meandering canals filled with reed and papyrus sedge (which is really quite romantic in a way).
Marvels of the natural landscape at the Okavango Delta

Okavango Delta offers diversified and rich island geography with marshes, canals, lakes and islands. Wildlife in the area migrates in different seasons depending on the abundance of water. The northwest portion of the delta enjoys ample water supply all year round while other areas receive varying amount of water throughout the year. Due to the abundant water supply, the Okavango Delta is home to numerous special forests in Africa. The wild flowers bloom in spring and the water surface is often covered with lilies. Wildlife in the area including leopards, lions, cheetahs, wild dogs, different species of antelopes and birds are mostly concentrated in the Moremi Game Reserve. The waters from the delta that seeps underground results in substantial amount of water deposit in the area. Consequently, vegetations such as wattles and baobabs were able to grow in the semi-desert landforms at Kalahari Desert. The Okavango Delta has numerous pans like the Makgadikgadi Pan and Naxi Pan, which show typical transitional geological features between delta and desert.