''Sthenonia'' is a genus of

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

Ulmaridae The Ulmaridae are a family of jellyfish, which includes the famous moon jellies, and other jellyfish with unique characteristics like '' Tiburonia granrojo''. Genera Formerly, the genus '' Phacellophora'' was also included in this family, but ...

. It contains one species making it a monophyletic group, that species is Sthenonia albida. It is located in the northwest pacific near

Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...

Pelagic The pelagic zone consists of the water column of the open ocean and can be further divided into regions by depth. The word ''pelagic'' is derived . The pelagic zone can be thought of as an imaginary cylinder or water column between the sur ...

and

subtropical The subtropical zones or subtropics are geographical zone, geographical and Köppen climate classification, climate zones immediately to the Northern Hemisphere, north and Southern Hemisphere, south of the tropics. Geographically part of the Ge ...

marine environments. It's has a overall disk shape that is 30 cm wide. It has a small

stomach The stomach is a muscular, hollow organ in the upper gastrointestinal tract of Human, humans and many other animals, including several invertebrates. The Ancient Greek name for the stomach is ''gaster'' which is used as ''gastric'' in medical t ...

References

Ulmaridae Scyphozoan genera {{Scyphozoa-stub