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City Nature Challenge 2018

What? The City Nature Challenge (CNC) is an friendly competition between cities all over the world to see which city can observe the most nature over a 4 - day period.

Why? CNC began in 2016 as a competition between Los Angeles and San Francisco.  It grew to a national scope in 2017 with 125K+ observations and 8,600+ species recorded by 4,200+ citizen scientists across the county.  The 2018 CNC will be
international, expanding citizen science efforts even further.

When? April 27 – 30, 2018

Who? The National Aquarium is coordinating all CNC efforts for the Baltimore Metro Area.  60+ other cities are also committed to particpating.

How Can You Get Involved? The National Aquarium is currently looking for partner organizations to host citizen science events during the 2018 CNC.  In order to participate, all events must do the following:

Find Wildlife

It can be any plant or critter in your backyard, schoolyard, or park in Baltimore.

Take a Picture of What you Find

Be sure to note the location of the critter or plant.

Share Your Observations

By uploading your findings through the free iNaturalist app.

Contact Maura Duffy ( to get your organization involved!

Earlier Event: November 16
NatureCity Forum
Later Event: April 28
Leakin Park BioBlitz