| Country | Locality | Introduced | Year | Qualitative Value | Ref. |
|---|---|---|---|---|---|
| United States (contiguous states) | Atlantic, w. USA (shore waters) | - | abundant | 84099 | |
| United States (contiguous states) | CA, s. | - | rare | 84099 | |
| United States (contiguous states) | Cape Hatteras, n. | - | rare | 84099 | |
| United States (contiguous states) | FL, e. Coast (shore waters) | - | abundant | 84099 | |
| United States (contiguous states) | GA, s. | - | common | 84099 | |
| United States (contiguous states) | Sapelo Island, off | - | very common | 84099 | |
| Mexico | south GA to Gulf of Mexico | - | common | 84099 |