overexploitation

It seems that only in movies, but reports that the first two sharks appear more and more. What is the reason?

Most of the global fish stocks, which are over-exploited, may recover in the next 10 years.

The world is precarious in the brink of mass extinction, and humans have accelerated the disappearance of organisms by 10,000 times.

Many Nobel laureates have sounded a warning bell about the status of the Earth being over-exploited.