Carcinus maenas
Carcinus maenas
(green crab)

67 results for Carcinus maenas (green crab)
Download Data
Click here for listing in all states

Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
4362 CA San Francisco Bay1990 18050004 San Francisco Bayestablished
4242 CA San Francisco Bay1994 18050004 San Francisco Bayestablished
619819 CAContra CostaPoint San Pablo Yacht Harbor, San Pablo Bay2004 18050002 San Pablo Bayestablished
619826 CAContra CostaRichmond Marina2005 18050002 San Pablo Bayestablished
4743 CAHumboldtArcata Bay E side of bay1995 18010102 Mad-Redwoodestablished
272619 CAHumboldtBracut, Arcata Bay.2001 18010102 Mad-Redwoodestablished
4892 CAHumboldtBracutt Slough [Eastside of Arcata Bay, just S of Jacoby Creek, Bayside, CA]1998 18010102 Mad-Redwoodestablished
887091 CAHumboldteast side of bay, just below waterline on edge of mudflat tidal channel draining an unnamed slough.1995 18010102 Mad-Redwoodestablished
272620 CAHumboldtEureka Slough, lower, Arcata Bay.2001 18010102 Mad-Redwoodestablished
4881 CAHumboldtHumboldt Bay (near Eureka, CA)1995 18010102 Mad-Redwoodestablished
4882 CAHumboldtHumboldt Bay (near Eureka, CA)1995 18010102 Mad-Redwoodestablished
4883 CAHumboldtHumboldt Bay (near Eureka, CA)1995 18010102 Mad-Redwoodestablished
619820 CAHumboldtHumboldt Bay General Location1995 18010102 Mad-Redwoodestablished
619818 CAHumboldtJacoby Creek2000 18010102 Mad-Redwoodestablished
272618 CAHumboldtKlopp Lake2001 18010102 Mad-Redwoodestablished
4891 CAHumboldtMad River Slough [between Arcata and the Pacific Ocean]1998 18010102 Mad-Redwoodestablished
272617 CAHumboldtMad River Slough, Samoa Blvd. Bridge2001 18010102 Mad-Redwoodestablished
4888 CAMarinBolinas Lagoon (Kent Island) (Bolinas, CA)1993 18050005 Tomales-Drake Baysestablished
4361 CAMarinBolinas Lagoon (near Bolinas)1995 18050005 Tomales-Drake Baysestablished
619828 CAMarinChina Camp2005 18050002 San Pablo Bayestablished
619829 CAMarinChina Camp2010 18050002 San Pablo Bayestablished
4739 CAMarinDrakes Estero [Drakes Bay, W of Point Reyes Sta]1993 18050005 Tomales-Drake Baysestablished
4889 CAMarinDrakes Estero [Drakes Bay, W of Point Reyes Sta]1993 18050005 Tomales-Drake Baysestablished
4363 CAMarinDrakes Estero [Drakes Bay, W of Point Reyes Sta]1995 18050005 Tomales-Drake Baysestablished
4735 CAMarinEstero Americano [Sonoma/Marin County line, Bodega Bay]1995 18050005 Tomales-Drake Baysestablished

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.


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. [2024]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [5/20/2024].

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.