| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Ciona antarctica Hartmeyer, 1911 |
Atlantic Antarctic and Indian Ocean | ||
| Ciona edwardsi (Roule, 1886) |
Yellow sea squirt | Atlantic and the Mediterranean Sea | |
| Ciona fascicularis Hancock, 1870 |
Northeast Atlantic | ||
| Ciona gefesti Sanamyan, 1998 |
Northwest Pacific | ||
| Ciona hoshinoi Monniot, 1991 |
Western Central Pacific | ||
| Ciona imperfecta Monniot & Monniot, 1977 |
Atlantic Ocean | ||
| Ciona intestinalis (Linnaeus, 1767) |
Sea vase | Northeast Atlantic, Arctic and Mediterranean | 15 |
| Ciona mollis Ritter, 1907 |
Eastern Central Pacific | ||
| Ciona pomponiae Monniot & Monniot, 1989 |
Southeast Pacific | ||
| Ciona roulei Lahille, 1887 |
Red Sea squirt | Mediterranean | |
| Ciona savignyi Herdman, 1882 |
Yellow-spotted sea squirt | Cosmopolitan | 15 |
| Ciona sheikoi Sanamyan, 1998 |
Northwest Pacific |