Carcinus maenas
Carcinus maenas
(green crab)
Crustaceans-Crabs
Exotic
Collection Info
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22 results for Carcinus maenas (green crab)
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Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1872913 CAAlamedaAngel Island-Frontal San Francisco Bay Estuaries2025 18050002 San Pablo Bay 
1873890 CAAlamedaMcLaughlin Eastshore SP University2025 18050002 San Pablo Bay 
1872910 CAAlamedaSan Francisco Bay2025 18050002 San Pablo Bay 
1737165 CAAlamedaSan Francisco Bay at Emeryville fishing pier2024 18050002 San Pablo Bayestablished
1872912 CAContra CostaMiller-Knox Regional Shoreline2025 18050002 San Pablo Bay 
619819 CAContra CostaPoint San Pablo Yacht Harbor, San Pablo Bay2004 18050002 San Pablo Bayestablished
619826 CAContra CostaRichmond Marina2005 18050002 San Pablo Bayestablished
619828 CAMarinChina Camp2005 18050002 San Pablo Bayestablished
619829 CAMarinChina Camp2010 18050002 San Pablo Bayestablished
1872914 CAMarinPickleweed Inlet2025 18050002 San Pablo Bay 
1872911 CAMarinRichardson Bay near Dunphy Park2025 18050002 San Pablo Bay 
1758476 CAMarinRichardson Bay near Dunphy Park2025 18050002 San Pablo Bay 
1395877 CAMarinSan Francisco Bay2000 18050002 San Pablo Bay 
1395920 CAMarinSan Francisco Bay2000 18050002 San Pablo Bay 
619827 CASolanoCarquinez Strait, Cal Maritime Academy/Vallejo2005 18050002 San Pablo Bayestablished
1395919 CASolanoNapa River2000 18050002 San Pablo Bay 
1395905 CASolanoNapa River2000 18050002 San Pablo Bay 
1395891 CASolanoNapa River2000 18050002 San Pablo Bay 
1395890 CASonomaPetaluma River2000 18050002 San Pablo Bay 
1395876 CASonomaPetaluma River2000 18050002 San Pablo Bay 
1395904 CASonomaPetaluma River2000 18050002 San Pablo Bay 
1395918 CASonomaPetaluma River2000 18050002 San Pablo Bay 

Data Disclaimer: Number of records does not imply species abundance. This summary represent collection records only and may not reflect the actual distribution of established populations. These data are preliminary or provisional and are subject to revision. They are being provided to meet the need for timely best science. The data have not received final approval by the U.S. Geological Survey (USGS) and are provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the data.

Disclaimer:

The data represented on this site vary in accuracy, scale, completeness, extent of coverage and origin. It is the user's responsibility to use these data consistent with their intended purpose and within stated limitations. We highly recommend reviewing metadata files prior to interpreting these data.

Citation information: U.S. Geological Survey. [2025]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [12/5/2025].

Contact us if you are using data from this site for a publication to make sure the data are being used appropriately and for potential co-authorship if warranted.

For general information and questions about the database, contact Wesley Daniel. For problems and technical issues, contact Matthew Neilson.