An ecosystem is an entity formed by the interaction between living organisms and the physical environment. It is classified into two main Types of Aquatic Ecosystems--Estuary Image
categories: Terrestrial ecosystems and Aquatic ecosystems. Terrestrial ecosystems contain organisms that depend on physical environment on land masses of continents. Aquatic ecosystems are systems composed of living organisms and non-living elements interacting in a watery environment. In simple terms, an aquatic ecosystem is a community of plants and animals that primarily depend on water. There are two major types of aquatic ecosystems:
Marine Ecosystems
Freshwater Ecosystems