SeaLifeBase
Introduced from: Atlantic, Northwest to: Pacific, Eastern Central

n=16 | Species introduction records list
 
# Species Year Period From - To Reason Established in the wild Ref. no.
1 Amphibalanus improvisus  1853 18th century Northwest Atlantic - San Francisco Bay, California.  accidental with ships  Unknown 007836
2 Ampithoe longimana  1949 1925-1949 Western North Atlantic - New Port Bay, California  biofouling  Unknown 003224
3 Boonea bisuturalis   1925-1949 New York - San Francisco Bay  accidental   125669
4 Bugulina stolonifera  1985 1975-present Possibly from northwest Atlantic - Monterey Bay California  biofouling  Unknown 007836
5 Conopeum tenuissimum  1951 1950-1974 Northwest Atlantic - San Francisco Bay, California.  ballast water  Unknown 007836
6 Crassostrea virginica  1866 18th century Eastern part of North America. - Pearl Harbor  aquaculture  Unknown 003248
7 Crepidula convexa   1925-1949 New York - San Francisco Bay  accidental   125669
8 Ectopleura crocea  1865 18th century Northwest Atlantic. - San Diego Bay California  accidental with ships  yes 007836
9 Gemma gemma   1925-1949 New York - San Francisco Bay  accidental   125669
10 Geukensia demissa   1925-1949 New York - San Francisco Bay  accidental   125669
11 Ilyanassa obsoleta   1925-1949 New York - Western USA  accidental   125669
12 Macoma balthica   1925-1949 New York - San Francisco Bay  accidental   125669
13 Myosotella myosotis   1925-1949 New York - Western USA  accidental   000000
14 Petricolaria pholadiformis   1925-1949 New York - Western USA  accidental   125669
15 Rhithropanopeus harrisii  1937 1925-1949 Western North Atlantic - San Frnacisco Bay, California  biofouling  Unknown 003224
16 Urosalpinx cinerea   1925-1949 New York - Western USA  accidental  yes 125669
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