| Species | Name Used |
|---|---|
| Tedania infundibuliformis Ridley & Dendy, 1886 | Tedania infundibuliformis (p. ) |
| Tedania massa Ridley & Dendy, 1886 | Tedania actiniformis (p. ) |
| Terpios gelatinosa (Bowerbank, 1866) | Suberites tenuiculus (p. ) |
| Tethya ingalli Bowerbank, 1858 | Tethya ingalli (p. ) |
| Tethya japonica Sollas, 1888 | Tethya japonica (p. ) |
| Thenea muricata (Bowerbank, 1858) | Thenea muricata (p. ) |
| Thenea wyvillei Sollas, 1886 | Thenea wyvillei (p. ) |