Are there any interesting facts on estuaries?

Both of these sites have interesting facts about estuaries.

http://water.epa.gov/learn/kids/estuaries/index.cfm

http://www.gma.org/katahdin/estuary.html

Thank you very much. :)

You're very welcome.

Yes, there are many interesting facts about estuaries. Estuaries are unique and complex ecosystems where freshwater from rivers and streams mixes with saltwater from the ocean. Here are a few interesting facts about them:

1. Biodiversity: Estuaries are home to a rich diversity of plant and animal species, making them some of the most productive ecosystems on Earth. They serve as nurseries for many commercially important fish species and provide critical feeding and breeding grounds for migratory birds.

2. Brackish Water: Estuaries have brackish water, which is a mix of freshwater and saltwater. This variable salinity creates a perfect environment for species adapted to different salt levels.

3. Tidal Influence: Estuaries are influenced by tides, which change the water level and flow direction. The mixing action of tides helps distribute nutrients and oxygen throughout the estuary, supporting a vibrant ecosystem.

4. Filtering Function: Estuaries act as natural filters, removing sediments, pollutants, and excess nutrients from the water before it enters the ocean. This helps improve water quality and protects coastal areas from pollution.

5. Salt Marshes and Mangroves: Estuaries often have salt marshes or mangrove forests along their shores. These habitats provide protection against erosion, serve as breeding grounds for many species, and act as a buffer against storm surge and sea-level rise.

To find more interesting facts about estuaries, you can conduct further research online or explore educational websites, scientific publications, or books on marine biology and ecology. Additionally, organizations like NOAA (National Oceanic and Atmospheric Administration) and environmental agencies often provide resources and information about estuaries.