| Main Ref. | Gravili, C., C.G. Di Camillo, F. Piraino and S. Boero, 2013 |
| To | Villefranche-sur-mer |
| FAO area | Mediterranean and Black Sea |
| From | unknown |
| FAO area | |
| Year | |
| Range | |
| Period | unknown |
| Established in the Wild | yes |
| Established in Aquaculture | |
| Significant Ecological Interactions | |
| Significant Socio-economic Effects | |
| Introduced by | |
| Reason | diffused from other countries |
| Other Reason | |
| Comments | The first record of Clytia mccradyi in the Mediterranean was from Villefranche-sur-mer where it is considered to have expanded its range naturally and it has since setablished in the Western Mediterranean. |