Shark fin is still considered to be a delicacy in the Asian market even though it is illegal to purchase and hunt for it. These sharks get their fins cut off while they’re alive and left to die in the water or on the shore if they took them out. It is extremely cruel. There are many videos about this sick illegal trade. Here is an example:
http://www.youtube.com/watch?v=zep7B1esW-M
Chef Gordon Ramsey was held at gunpoint because he wanted to film and expose illegal fishing of shark fin in Costa Rica. See following article: http://www.torontosun.com/entertainment/tv/2011/01/03/16738641-wenn-story.html