Blackfordia virginica
Blackfordia virginica
(Black Sea jellyfish)
Coelenterates-Hydrozoans
Exotic
Collection Info
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8 results for Blackfordia virginica (Black Sea jellyfish)
Download Data

Specimen IDStateCountyLocalityYear HUC Number What's this? Drainage nameStatus
1795 CA lower Petaluma River1993 18050002 San Pablo Bayestablished
1799 CA San Francisco Bay1993 18050004 San Francisco Bayestablished
1800 CA San Francisco Bay1993 18050004 San Francisco Bayestablished
1794 CANapaNapa River [just S of Napa]1993 18050002 San Pablo Bayestablished
1798 CANapaNapa River beside the John F. Kennedy Boat Launch at the Napa Municipal Park1993 18050002 San Pablo Bayestablished
621150 CASolanoSan Pablo Bay - Napa River1993 18050002 San Pablo Bayestablished
621149 CASonomaSan Pablo Bay - Petaluma River1993 18050002 San Pablo Bayestablished
1804 VA Chesapeake Bay1993 02080101 Lower Chesapeake Bayestablished

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.

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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. [2026]. Nonindigenous Aquatic Species Database. Gainesville, Florida. Accessed [2/21/2026].

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