| antarctica | | limacina antarctica | species | 6 | 0 |
| antarctica | | limacina helicina | species | 2 | 0 |
| canada | | limacina helicina helicina | subspecies | 1 | 0 |
| japan | | limacina helicina helicina | subspecies | 10 | 0 |
| japan | hokkaido prefecture | limacina helicina | species | 7 | 0 |
| russia | | limacina helicina | species | 2 | 0 |
| united states | | limacina helicina | species | 4 | 0 |