Asking English

Please tell me the meaning of “getting even” in the following sentence:
“Getting even? Humans kill 30 million to 70 million sharks per year, the researchers said”
Thank you very much

The idea of sharks as mean eaters means that sharks have always been the predators. Now man is ‘getting even’ (getting his own back) by killing the sharks instead of vice versa.

It shouldn’t be taken too seriously or too literally though… the writer was looking for a catchy headline.