''Chrysaora pacifica'', commonly named the Japanese sea nettle, is a

jellyfish Jellyfish, also known as sea jellies or simply jellies, are the #Life cycle, medusa-phase of certain gelatinous members of the subphylum Medusozoa, which is a major part of the phylum Cnidaria. Jellyfish are mainly free-swimming marine animal ...

in the family

Pelagiidae The Pelagiidae are a family of jellyfish. Members of the family ''Pelagiidae'' have no ring canal, and the marginal tentacles arise from umbrella margin. Genera There are four genera currently recognized: *Genus '' Chrysaora'' – (14 species) ...

. This common species is native to the northwest Pacific Ocean, including Japan and Korea, but it was formerly confused with the larger and more northerly distributed '' C. melanaster''. As a consequence, individuals kept in

public aquarium A public aquarium () or public water zoo is the aquatic counterpart of a zoo, which houses living aquatic animal and aquatic plant, plant specimens for public viewing. Most public aquariums feature tanks larger than those kept by home aquarists, ...

s have often been mislabelled as ''C. melanaster''. The

medusae Jellyfish, also known as sea jellies or simply jellies, are the medusa-phase of certain gelatinous members of the subphylum Medusozoa, which is a major part of the phylum Cnidaria. Jellyfish are mainly free-swimming marine animals, althoug ...

of ''C. pacifica'' typically has a bell with a diameter of . Its sting is strong and can be dangerous to humans.

Functions

If the jellyfish sustained injuries, they would go through the process of symmetrization, in which they would restructure their figures by moving around existing parts and not recreating the ones lost to maintain balance.

References

pacifica Animals described in 1886 {{scyphozoa-stub