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2026 Mallows Bay BioBlitz

A young girl wearing pink holds her phone up to a yellow flower to take a picture.
Use your phone to take a photo of a plant or animal to be counted as an observation for the BioBlitz (Credit: Elena Gilroy/Charles County).

Mallows Bay-Potomac River National Marine Sanctuary is joining the City Nature Challenge! The City Nature Challenge is a global citizen science event motivating people around the world to find and document wildlife in their own cities. Residents throughout the Washington DC metro area will be exploring local parks, backyards, and neighborhoods to observe the wild plants, fungi and animals that share our environment.

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