| Main Ref. | Bartley, D.M. (comp./ed.), 2006 |
| To | United States of America |
| FAO area | |
| From | New Zealand |
| FAO area | |
| Year | 1992 |
| Range | |
| Period | 1975-present |
| Established in the Wild | yes, self reproducing |
| Established in Aquaculture | |
| Significant Ecological Interactions | unknown |
| Significant Socio-economic Effects | |
| Introduced by | other introducer |
| Reason | accidental |
| Other Reason | |
| Comments | Specimens of this sea slug species were discovered in abundance in San Francisco bay in 1993 (National Report to ICES, 1994). Other information (from Gosliner, 1995): their numbers have increased steadily and the species is now well established. |