Colombia has a large amount of the world's species.
Amazon rainforest . The Amazon represents over half of the planet 's remaining rainforests , and comprises the largest and most biodiverse tract of tropical rainforest in the world , with an estimated 390 billion individual trees divided into 16,000 species . Colombia is the country with the second-highest biodiversity in the world , behind Brazil . As of 2016 , 56,343 species are registered in Colombia , of which 9153 endemic . Colombia . Ecologically , it is one of the world 's 17 megadiverse countries , and the most densely biodiverse of these per square kilometer .