This is very important because the whales are slowly becoming extinct and its a very cruel way to kill the whales. How would you like to be killed by using a 90 kg, 2 metre long harpoon that is shot out of a cannon, this contains a grenade which blows you apart when hit. Even worse this can still not kill you, you could be pulled onto the boat and slaughtered alive, having a horrible death.
Not only the whales are being effected by this, all the animals that are connected in the food web are too. If the whales decline, their food will increase which means we will have more fish and krill.This then makes other animals suffer as well, as there is less food that the krill and fish eat.
If we do not stop the whaling NOW soon there will be no whales and the marine life will slowly decrease.