The Jellyfish Statue is a functional statue found underground. When wired to a trigger and activated, the statue will spawn Blue Jellyfish. A maximum of three statue-spawned jellyfish may be alive at one time.
The jellyfish will drop glowsticks, which sell for very little, however, due to jellyfish spawned from this statue dropping Jellyfish Necklaces, which can be sold for 1 gold each, you can make a rather efficient money farm when hooked up to a crab generator. It is also useful, however, if you only wish to use the glowsticks.