I dare say, The Marquesian fishing industry is one of the most sustainable fishing indrustries in the world. Here a 2 minute movie of the industrial process.
Next to the nature features, also consider the sustainability of the labor circumstances.
Compare this to the European industry and draw your conclusion.
Let us not forget that we human beings are most happy with simple, understandable, processes, on a human size.
And by the way, that is often sustainable too.