Coastal zone, middle zone, and inland zone make up the structure of a mangrove ecosystem.

A mangrove ecosystem is a crucial coastal habitat characterized by salt-tolerant trees and complex interactions between terrestrial and marine species. It is typically divided into three distinct zones based on proximity to water and the environmental conditions prevalent in each area: the coastal zone, the middle zone, and the inland zone.

1. Coastal Zone: This is the area closest to the shoreline, where the influence of tidal action is most pronounced. It is characterized by high salinity and fluctuating water levels. Species in this zone include various types of mangrove trees, such as red and black mangroves, which can tolerate high salinity and flooding. This zone provides essential habitats for marine life, serving as nurseries for fish and crustaceans.

2. Middle Zone: Situated between the coastal and inland zones, the middle zone experiences less tidal influence and a more stable environment. The vegetation in this area may include species like white mangroves and other trees that can tolerate some salt but are not as salt-tolerant as those in the coastal zone. This zone is crucial for nutrient cycling and offers habitat diversity.

3. Inland Zone: The inland zone is farthest away from the influence of saltwater and often has a brackish or freshwater environment. This area supports a different set of vegetation that includes mangroves with lower salt tolerance and other plant species, contributing to the overall biodiversity of the ecosystem. It also plays a vital role in water filtration and preventing soil erosion.

Each of these zones plays a unique role in the mangrove ecosystem, supporting diverse wildlife, protecting coastlines from erosion, and serving as a natural barrier against storms. The health of mangrove ecosystems is vital for the protection of coastal areas and the myriad of species that rely on this unique environment for survival.