Shark finning removes fins from live sharks that are then thrown back into the ocean to die slowly, for shark fin soup.
Finned sharks thrown back into the ocean experience a prolonged death by suffocation, as they cannot swim to ventilate their gills, blood loss, and predation while still alive. Death can take hours. This represents one of the most severe welfare abuses in commercial fishing. The practice causes suffering at enormous scale to animals capable of experiencing pain.