How are scientists certain that Megalodon is extinct when approximately 95% of the world’s oceans remain unexplored?

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Would like to understand the scientific understanding that can be simply conveyed.

Thanks you.

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Firstly, the Megalodon was thought to live in the tropics and coastal areas, not in deep water, obviously this would make it very difficult to miss. If it existed we’d probably find it 200 metres off a popular beach, not in the middle of nowhere.

Secondly, marine biologists would notice an apex predator. It’s one of the most vital roles in a food chain, a Megalodon would be eating tons, it would have a massive impact on any ecosystem it finds itself in. Marine biologists are constantly tracking and monitoring animal behaviour and ecosystems, we’d notice it.

Thirdly, when we say 95% of the world’s oceans are unexplored, we mean that a human hasn’t personally been in those spots, looked around and gone, ‘yep, nothing here’. We have completely mapped out the ocean floors, we know 95% of the ocean is completely empty, no need to go look. A giant creature doing laps in the middle of nowhere would have been spotted.

Lastly, the only physical evidence we’ve found that relates to Megalodons dates back to about 3.6 to 4 million years old. No new evidence has shown up, not a single tooth, no corpses, absolutely nothing.

So yeah, scientists are pretty certain it’s not here anymore.

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