Demon Shark (real monster)

Demon Shark was a real prehistoric monster.

Physical Appearance
The creature looks like a shark with four legs and frog-like feet.

History
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.

Appearances

 * The Scooby-Doo Show
 * 112. There's A Demon Shark In The Foggy Dark