What is the ruling on hunting sharks by striking them on the head with a sharp instrument or a rounded stick until they die, after bringing them out of the sea onto the deck of the ship?

Islamic law commands kindness to animals when slaughtering them. Fish are not required to be slaughtered after being caught, and it is not permissible to torture them; rather, they should be left until they die. Some scholars hold the view that it is preferable to slaughter a fish if it is large and its death is delayed, while the more correct opinion is that it is preferable to slaughter it for its comfort.