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

Question

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

Thanks you.

In: 5134

Answer 1

Meglodon wasn’t a benthic organism, it didn’t live at extreme depths, which makes sense since gigantism is a hard thing to maintain in those zones. A big animal needs a lot of food, and there isn’t much down where the marine snow falls, and what’s there is thinly scattered.