Biodiversity is so vast and so complicated, that biologists still haven't documented most species on our planet. Scientists continue to discover new species even in the 21st century. One of the most astonishing species discovery confirmations was in 2010 when scientists discovered that there are actually three species of elephant.
The African forest elephant (Laxodonta Cyclotis) is a distinctly different species than the African savannah elephant (Laxodonta Africana).
After studying DNA samples of elephants from Africa and Asia, scientists concluded that forest elephants are as related to savannah elephants as Asian elephants are to mammoths. In fact, the savannah elephant weighs nearly twice as much as the forest elephant. (3) This discovery shows just how complex biodiversity is and how much more there is to learn about it.