They kind of don’t. They more or less catch whatever’s in the water where you’re trawling.
You get the desired fish by trawling where your desired fish are, but you do get whatever else is there as well, save for the ones small enough to slip the net.
They dont and they just lie about it, I remember an article from awhile back, the government mandated cameras on fishing boats and the reported catches changed drasticly
They do try to avoid other stuff as it’s usually not profitable to catch a bunch of other stuff, and some larger animals can fuck up your net/boat. You make the net holes big enough to let smaller fish through. And many countries mandate features like turtle excluder devices. They aren’t perfect, but they do at least help let larger animals out.
What they still catch they generally throw overboard. It might still be alive, it might not. It might be severely injured from the nets and being hauled and dumped onto the boat.
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They catch loads of everything. It’s called by catch. Usually it is just tossed back overboard though likely still dead if it isn’t valuable.
They kind of don’t. They more or less catch whatever’s in the water where you’re trawling.
You get the desired fish by trawling where your desired fish are, but you do get whatever else is there as well, save for the ones small enough to slip the net.
They dont and they just lie about it, I remember an article from awhile back, the government mandated cameras on fishing boats and the reported catches changed drasticly
They do try to avoid other stuff as it’s usually not profitable to catch a bunch of other stuff, and some larger animals can fuck up your net/boat. You make the net holes big enough to let smaller fish through. And many countries mandate features like turtle excluder devices. They aren’t perfect, but they do at least help let larger animals out.
What they still catch they generally throw overboard. It might still be alive, it might not. It might be severely injured from the nets and being hauled and dumped onto the boat.