Step 1: Only whales are protected.
Step 2: The nember of wahles increase.
Step 3: Whales feed on a large amount of fish etc.
Step 4: The fish etc. decrese shrply.
Step 5: There are no foods, and whales die one after another.
Step 6: The sea dies.
We advance to step 4 now.
Next is step 5.
This is not fault of we Japanese.