Possible+Solutions

1. Have a whaling limit per country, per year.

2. Any ship found with more than one whale on board, the whole crew should be punished by a jail sentence.

3. There could be a whaling licence so if you have more than one whale on board, you get a demerit point taken off just like a driving licence, further resulting in a hefty fine.

4. There should be a certain amount of people on the shup with licenses to be aloud to capture a whale.