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Monday 16 December 2013

What is an estuary


What is an Estuary?

Estuaries are lagoons, bays, sound and swaps they are also landforms. An estuary is when fresh water joins up with the salt water. In New Zealand's freshwater are feeding grounds. Feeding grounds are when animals in the river get fed like fish, shellfish and birds.

Estuaries are a good place for food gathering spots. Estuaries provide safe, sheltered and lots of fish, shellfish and birds for eating.

Mangroves and seagrass are places for filter feeding animals. When mangroves and seagrass are in sea water they need to cope with the sunlight and wind which will hurt them. Garfish and lots of other types fish were found in seagrass.

Rivers carry sediment from land into hem and tide brings sand from the sea floor.Estuaries will age and eventually die, its sediment dries up.

In New Zealand estuaries are important to sea animals. We all need to keep all estuaries healthy and clean to keep the animals alive.     

      

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