Giant Jellyfish

Giant Jellyfish is a massively enlarged jellyfish kaiju created by Hanna-Barbera that first appeared in the 1979 The Godzilla Power Hour episode, The Macro-Beasts.

History

The Giant Jellyfish was of several marine animals enlarged to giant size, thanks to recent volcanic eruptions and a mysterious underground, gooey substance emerging from Capaldi Island; a relatively young formation which itself was created by the aforementioned geological activity. The combination of heated water and the edible substances resulted in the once normal jellyfish and its fellow sea creatures to assume such gigantic proportions, becoming the titular Macro-Beasts. The Giant Jellyfish was the second Macro-Beast to be encountered by the visiting crew of The Calico, completely immobile and floating upon the ocean's surface.

Trivia

• The Giant Jellyfish is never seen again after its brief appearance, though it could be assumed that like the other Macro-Beasts, the Jellyfish returns to its original state thanks to the actions of Godzilla and his allies on board the Calico.
• Brock, a crew member of the Calico, comments on the Giant Jellyfish being 'the size of a whale', however when visually compared to the Calico itself in the episode, the Giant Jellyfish appears to be even bigger than Godzilla himself.
• The mysterious purple substance that enlarges the Macro-Beasts is likely a direct reference to and based off a similar subterranean chemical from H.G. Wells' novel The Food of the Gods and How It Came to Earth (1901-1904), which also enlarged any life-form which consumed it.