Questions for “Attack of the inner-cannibal mega-shark”
![Megalodon shark illustration](https://www.snexplores.org/wp-content/uploads/2020/10/100220_CG_megalodon_feat-1028x579.jpg)
Massive megalodons ruled the seas some 23 million to 2.5 million years ago. Why these giants got so big isn’t known. New research suggests it may be due to warm-bloodedness, lots of food — and cannibalization in the womb.
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