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
Best! (Jellyfish album) Best! (Jellyfish album) Best! is a greatest hits compilation by the 1990s pop band Jellyfish. The album was released in 2006 and featured twenty tracks. Eight of the tracks were non-album while the other twelve consisted of songs pulled from the band's two (and only) albums, "Bellybutton" and "Spilt Milk". The song "Ignorance is Bliss" was taken from a Nintendo games compilation entitled "" and is inspired by the video game Super Mario World. The song "No Matter What" is a live cover of a Badfinger song. All songs written by Roger Manning and Andy Sturmer, except where noted. Tracks