| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Loimia arborea Moore, 1903 |
Medusa spaghetti worm | Northwest Pacific and the Mediterranean | |
| Loimia bandera Hutchings, 1990 |
Northwest Pacific | 3 | |
| Loimia ingens Grube, 1878 |
Pacific Ocean | ||
| Loimia medusa (Savigny, 1818) |
Medusa worm | Indo-Pacific and Western Central Atlantic | 25 |
| Loimia montagui (Grube, 1878) |
Eastern Pacific | ||
| Loimia ochracea (Grube, 1878) |
Western Pacific | ||
| Loimia variegata (Ehrenberg & Grube, 1869) |
Western Indian Ocean | ||
| Loimia viridis Moore, 1923 |
Western Central Atlantic |