About the Data
Species records include data on invasions history, distribution, ecology, impact, and more. These data were gathered from published literature and targeted surveys. All records have undergone expert review, unless otherwise noted.
Species Profiles
NEMESIS includes detailed information on about 500 species of marine and estuarine of invertebrates and algae introduced to the United States. Each record contains information on taxonomy, distribution, ecology, and impacts, as well as references.
Daily Invader
Upogebia affinis
The burrowing shrimp, Upogebia affinis, is commonly known as the Coastal Mud Shrimp and the Flat-Browed Mud Shrimp. It is native to the Atlantic Coast of North America from Cape Cod, Massachusetts to Rockport, Texas. Four specimens of U. affinis were found in San Francisco Bay, but this species has not established and is considered a failed introduction. Possible vectors include accidental transport with the Eastern Oyster (Crassostrea virginica) or within ballast water aboard commercial ships.
*Outside of its native range, this species is not currently established in North American waters.
Daily Invader for 2023-05-24