@Rampant Spaniel
"The problem is when indigenous whaling goes from 4 blokes in a dugout with a hand held harpoon working close to shore to an armada crossing the globe"
Indeed. If indigenous whaling is to be used as justification then indigenous techniques should be used.
But then what kind of justification is "we've done it in the past" anyway? There are a load of things humans have done in the past that are considered well beyond the pale in modern times.
I appreciate that you can't just go around telling other sovereign nations what to do but some practices have global impact.