Jellyfish system. Nematocysts, which deliver the sting, are located mostly on the tentacles; true jellyfish also have them around the mouth and stomach. Jellyfish do not need a respiratory system because sufficient oxygen diffuses through the epidermis. They have limited control over their movement, but can navigate with the pulsations of the bell-like body; some species are active swimmers most of the time, while others largely drift. The rhopalia contain rudimentary sense organs which are able to detect light, water-borne vibrations, odour and orientation. A loose network of nerves called a "nerve net" is located in the epidermis. Although traditionally thought
Jellyfish Entertainment Jellyfish Entertainment Jellyfish Entertainment (), is a South Korean entertainment company established by composer and producer Hwang Se-jun in Seoul, South Korea. Jellyfish Entertainment is the home of artists including Park Yoon-ha, Jang Hye-jin, VIXX, VERIVERY and Gugudan. The agency also the home of actors including Park Jung-ah, Choi Ji-na, Jiyul, Kim Ye-won and Park Jung-soo. Jellyfish Entertainment was founded on August 17, 2007 in Seoul by composer and producer Hwang Se-jun. The first artist to sign under the company was the established ballad singer Sung Si-kyung, who released the single "Parting Once Again" (). One year later, the company