Estuaries
are critical for the survival of many species.
Tens
of thousands of birds, mammals, fish, and other wildlife depend on
estuarine
habitats as places to live, feed, and reproduce. Estuaries provide
ideal
spots for migratory birds to rest and refuel during their
journeys.
And
many species of fish and shellfish rely on the sheltered waters of
estuaries
as
protected places to spawn, giving them the nickname "nurseries of
the sea."
Hundreds
of marine organisms, including most commercially valuable
fish
species, depend on estuaries at some point during their development .
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