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

My apartment has many nooks that are covered up, and cabinets that I never open, and cracks in the floorboard. I am still fairly confident that I do not have a family of Geese hiding in here. Megalodons are big, and they would need a lot of room to survive.