Chrysaora chinensis

Chrysaora chinensis, or the Indonesian sea nettle, is a species of jellyfish in the family Pelagiidae. It is native to the central Indo-Pacific region and its sting is considered dangerous.
First described by Ernst Vanhöffen in 1888, in 1910 it was considered a variant of "C. helvola" and in 1954 it was considered a synonym if it, while other authorities have considered it as a synonym of various other "Chrysaora" species. Although the type specimen of "C. chinensis" apparently no longer exists, the species of the central Indo-Pacific region is different both from relatives in the northeast Pacific (the region where "C. helvola" was described) and those found elsewhere. As a consequence, recent authorities recognize it as a valid species.