| Citation | Jarms, G. and A.C. Morandini (eds.), 2019 World Atlas of Jellyfish. Abhandlungen des Naturwissenschaftlichen Vereins in Hamburg (N.F.), 0173-7481; special volume 2019. | |
| Ref. | 121705 Jarms, G. and A.C. Morandini (eds.), 2019 | |
| Page | 243 | |
| Named Used as Valid | Periphylla periphylla | |
| Locality | ||
| Distribution | Circumglobal, except Arctic and Sea of Japan. | |
| Quote | Maximum size: 35 cm, WD, unsexed. Common name: merchant-cap and helmet jellyfish. |