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
The Thing About Jellyfish The Thing About Jellyfish The Thing About Jellyfish is a 2015 children's novel written by Ali Benjamin, her fiction debut. The book follows Suzy Swanson, the protagonist and narrator, who theorizes the death of her friend, Franny Jackson, was caused by a jellyfish sting. Suzy has just started the seventh grade, which is the second year at Eugene Field Middle School in fictional South Grove, Massachusetts. During their sixth grade year, Franny became interested in boys and started to join a more popular social circle than the sometimes awkward Suzy, who had been best friends with Franny starting shortly after