Would you ever venture into the ocean if you knew this creature could be lurking beneath you? It's twice the size of a T. rex, its jaws are big enough to crush cars, and it can swallow multiple humans at a time! This ancient beast is called a megalodon shark, and if it had never become extinct, it would have a surprisingly large impact on our lives. How would they change the way we use our oceans?

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Correction at 4:33 - Yes, you are correct — the megalodon was indeed a fish and not a mammal.

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Transcript and sources: https://whatif.show/what-if-megalodon...
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What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure — grounded in scientific theory — through time, space and chance, as we ask what if some of the most fundamental aspects of our existence were different.