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This page is for the real monster. For the costume see the Demon Shark.
The Demon Shark was a real prehistoric monster.
The creature looks like a shark with four legs and frog-like feet.
The Scooby-Doo Show
Demon Shark was discovered in the Indian Ocean, where it remained frozen for the last million years. It was transported to Aqualand Laboratory to be examined by Professor Beaker.