Jellyfish diameter; the tentacles and mouth parts usually extend beyond this bell dimension. The smallest jellyfish are the peculiar creeping jellyfish in the genera "Staurocladia" and "Eleutheria", which have bell disks from to a few millimeters in diameter, with short tentacles that extend out beyond this, which these jellyfish use to move across the surface of seaweed or the bottoms of rocky pools. Many of these tiny creeping jellyfish cannot be seen in the field without a hand lens or microscope; they can reproduce asexually by fission (splitting in half). Other very small jellyfish, which have bells about one millimeter, are
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