you need more than laws, you need enforcement of those laws.

How do you enforce laws in international waters on foreign flagged ships?

shrug. wasnt addressing that situation specifically. but the means would be established by negotiated treaty, obviously.

With a navy.

Environmental protection is a better casus belli than most wars get.

These kinds of responses are akin to “If it’s illegal and people are still doing it, then clearly the solution is to make it extra illegal!”

These kind of comments are akin to "why bother with laws if people break them?" Environmental crimes like using plastic nets should be treated as smuggling or piracy is. Total elimination of plastic nets likely won't be possible, just as total elimination of smuggling and piracy hasn't been achieved, but usage would certainly be reduced and any reduction is a win for the environment.

it is easy to pass a law and then turn the other way when it's violated. happened leading up to financial crisis. or that law about registering as a foreign agent in the us.