Jellyfish several countries; jellyfish caused a cascading blackout in the Philippines in 1999, as well as damaging the Diablo Canyon Power Plant in California in 2008. They can stop desalination plants and ships' engines. Jellyfish Jellyfish or sea jellies are the informal common names given to the medusa-phase of certain gelatinous members of the subphylum Medusozoa, a major part of the phylum Cnidaria. Jellyfish are mainly free-swimming marine animals with umbrella-shaped bells and trailing tentacles, although a few are not mobile, being anchored to the seabed by stalks. The bell can pulsate to provide propulsion and highly efficient locomotion. The tentacles
Jellyfish Entertainment working together. In October 2016, Jellyfish Entertainment announced that former Dal Shabet member Jiyul, signed a contract with the agency in order to pursue her career as an actress. In November 2016, former Jewelry member Kim Ye-won, joined Jellyfish Entertainment as an actress. On December 13, 2016, Jellyfish Entertainment released their "Jelly Christmas 2016" single album with the song, "Falling" (), as part of their digital music channel project "Jelly Box". The Jellyfish artists participating were Seo In-guk, VIXX, Gugudan, Park Yoon-ha, Park Jung-ah, Kim Gyu-sun, Kim Ye-won and Jiyul. In April 2017, agency trainee Yun Hee-seok represented Jellyfish Entertainment