The most persecuted animals in the ocean?

Sharks are dragged for hours on a rod and reel. They are pulled behind speeding boats and tortured to death. They are strung up like criminals at events to be observed by the crowds. Their jaws cut out and hung as trophies. What crime do sharks commit to deserve this? What harm do they do to the environment that they must be eradicated this way?

Atlantic bluefin tuna: the forgotten superpredator

We would expect that a huge, charismatic, and ecologically important predator would be celebrated in its own right. Especially if it is also endangered, has evolved some extreme physiological and behavioural adaptations to enable it to excel as one of the oceans’ top predators; this fish even hunts in coordinated packs much like a pride of lions.