Causes of shark death

Shark died of many causes. This is some of the causes:

1.copepod ,a small crustacean.       animal that can get into shark's gills and absorb its blood which give the shark less oxygen and die.

2.human web that suppose to catch fish . Apparently trapped the sharks and when they are trying to escape .they died when they frictioned with the rope that create wound on their body and at last it died