The rainforest has estimated seventy to ninety percent of life living and existing in its trees above the shaded forest floor. A primary tropical rainforest is made up at least five layers. These layers are the overstory, the canopy, the understory, the shrub layer, and the forest floor. Each layer has an important role being played and also has its own unique animal species and plants that interact with the ecosystem around them. The overstory is composed of the scattered surfacing trees which ascend twenty to a hundred feet above the rest of the canopy. Trees in this layer receive full sunlight. The canopy is the thick ceiling of closely spaced trees and their branches, the understory on the other hand are the more widely spaced, smaller trees that form a broken layer beneath the canopy. The shrub layer is distinguished by its shrubby species and young trees that grow only five to twenty feet off the forest floor. The forest floor composes the ground layer of the forest made up of trunks of trees, low-growing vegetation, and fungus. This layer of the rainforest can vary from forest to forest but serves as a good representation of vegetative and repeated structure of the forest.

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