by Alyssa Britz and Sam Tabares

Freshwater Ecosystem

Freshwater ecosystems are a subset of Earth's aquatic ecosystems. They include lakes and ponds, rivers, streams and springs, and wetlands. They can be contrasted with marine ecosystems, which have a larger salt content. Freshwater habitats can be classified by different factors, including temperature, light penetration, and vegetation.

Freshwater Plants

Freshwater Fish

Brackish Plants

Brackishwater Ecosystem

Brackish water or briny water is water that has more salinity than fresh water, but not as much as seawater. It may result from mixing of seawater with fresh water, as in estuaries, or it may occur in brackish fossil aquifers.

Brakishwater fish

Salwater Ecosystem

The saltwater or marine ecosystem has a large salt composition compared to freshwater, and covers nearly half of the earth. This biome is divided into oceans, coral reefs and estuaries. The marine biome supports more life forms than all other world habitats combined.

Saltwater Plants

Saltwater Fish