Appendage Jellyfish is a term used to describe the various body parts of jellyfish. TENTACLE, with 8 letters, is one of the most common appendages found on jellyfish and is used for movement and capturing prey. Medusas, with 7 letters, are the umbrella-shaped bell of the jellyfish, which is also used for movement. MEDUSA, with 6 letters, is another name for the umbrella-shaped bell of the jellyfish. STING, with 5 letters, is an appendage found on some jellyfish that can inject venom into their prey. Stung, with 5 letters, is the result of being injected with venom from a jellyfish STING.