Aurelia labiata is a species of moon jellyfish. It is a cnidarian in the family Ulmaridae.[1] It is typically larger than Aurelia aurita,[2] with individuals document up to 45 cm (18 in).[3] However, much of its size range overlaps with A. aurita (up to 40 cm (16 in)), making size an imperfect diagnostic tool. Most Aurelia labiata have a 16-scalloped bell, meaning the bell indents inward at 16 points, a characteristic that also appears in other Aurelia species.[4][5]Aurelia labiata occurs in the northeastern Pacific Ocean, from the northern coast of California, north to Canada and into Alaska[5].