> some countries with shadow fleets

I never saw this term used for fishing boats. Do you have any countries in mind? And what exactly is "shadow"?

    > Whales are dying because they are malnourished and that is an indicator that there’s barely anything left.

I assume you are talking about the recent deaths of Pacific Gray whales.[1] They are dying because climate change has depleted their primary food source in the Arctic. They are not dying due to overfishing by humans.

[1] https://insideclimatenews.org/news/24052026/pacific-gray-wha...