Help Save the Animals


Hypoxic: When plants take over the surface of water and other plants cant produce oxygen therefore there is an oxygen depreciation.

Improved Hypoxic: When an area was hypoxic, but oxygen levels are getting back to normal.

Eutrophic: When phosphorous and nitrogen is introduced into a body of water that leads to an overgrowth of algae and other producers.

Improved Hypoxic

Tijuana Estuary is an improved hypoxic. It is one of the few salt marshes remaining in southern California, 90% of it has been lost to development. The site is essential for animals, for breeding, feeding, and nesting. Over 370 species of birds use this land including 6 endangered species. 0.13 square kilometers have been affected by periodic hypoxia, but improving since 1990. Untreated sewage is the cause of this problem.


The Willapa River is hypoxic. It became hypoxic in the 1990s, it is characterized by it very cold and low oxygenated water. The water is getting colder earlier in the year, this increases the likelihood of hypoxia. The rive is abundant with creatures such as shellfish, oysters, many types of clams, and crabs. There was a significant fish kill killing many fish called sturgeon. The cause of the Williapa River being hypoxic is manure entering the river.


The South San Francisco bay in eutrophic. The water quality has improved since the 1960s because of modern sewage treatment plants. Increasing urban pressures and land based runoff are making it become eutrophic again. The largest algae and plant blooms are from February to May. The main cause of the issue is sewage and land based runoff.

Why we want to help

My advocacy group wants to help these particular bodies of water because we want to save the animals in the water. The animals are very important to my advocacy group and we want to do whatever we can to help the animals. If we can get the chemicals causing these problems out of the water we can help save the animals. In the photo you can see how many places in the world are affected by this problem.