The Speckled Squirter is a rare kind of jellyfish that SpongeBob and Patrick saw in the episode: The Pink Purloiner. It squirts jelly out every so often. In that episode, they migrated into Jellyfish Fields.
The Speckled Squirter is a jellyfish that looks like a normal one, although its squirters are bigger and they squit out jelly from everywhere. There are also mini squirters from the top of their body.