The EcoSphere Closed Aquatic Ecosystem is a complete ecosystem with sea water, algae, bacteria and live marine shrimp, all enclosed in a sealed glass sphere. All you need to do is to place the EcoSphere in sunlight. Unlike an aquarium, you do not need to feed the shrimp or change the water. The ecosystem is self contained and self sustaining.
Aquatic Ecosystems : An aquatic ecosystem is an ecosystem in a river. Areas of creatures that are dependent on each other and on their atmosphere exist in aquatic ecosystems. The two main types of ecosystem are marine and fresh water ecosystems.