Tropical rainforests

Only 2% of the sunlight reaches the bottom of the rainforest.

An excerpt from the article 20 facts about tropical rainforests

The vegetation that grows there is quite poor and sparse, as few species are able to function in such conditions. Most of the plants of the lowest level can be found in the periphery, in forests, clearings and around water.

The lowest floor is inhabited by the largest animals found in rainforests, such as the gorilla, okapi, sumatran rhinoceros, tapir and all kinds of amphibians, reptiles and insects.