The Jelly Buzz-Saws are stronger and deadly versions of jellyfish who appear in the episode "Squirrel Jelly."
They are stronger and deadly versions of jellyfish after consuming Frankenstein Fish Food. They can even extend razor sharp blades from their bodies.
Role in episode
Sandy feeds some normal jellyfish Frankenstein Fish Food, which turns them into Jelly Buzz-Saws. They then start attacking her, SpongeBob, and Patrick.