"Megalodon" may refer to:
- Perilous Prehistoric Seas: The ocean portrayed as dangerous in prehistoric times.
- Prehistoric Animal Analogue: Prehistoric animals used as designs for fictional ones for their mystery and nebulousness.
- Prehistoric Monster: Prehistoric animals portrayed as monstrous.
- Sea Monster: Large creatures that lurk in the ocean, including certain real life animals (such as ancient sea creatures) being portrayed as monstrous.
- Threatening Shark: Sharks portrayed as vicious.
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