[Air-horn blasts] Was that disruptive, Mr Oliver? – It was irritating but I didn’t
find it particularly disruptive. What about every, say, ten seconds
like seismic air-gun blasting goes on for days, weeks, months? – If I were that close to it,
yeah, probably. What if you depended on sound
for hunting your food and for communication?
Do you think it would be disruptive? – At a distance of 20 feet,
yes, it would be. How much louder do you think
seismic air-gun blasting sounds than this air-horn
you just heard? – I honestly don’t know. Take a guess. Ten times? – At a distance of how far? Well, say you’re within
a reasonable distance. Say you’re within quarter of a mile.
Is it ten times? 25 times? – I honestly don’t know. I mean, can you take a guess? – No. Hundred times? You think it’s 1,000 times louder? – I doubt it.
You doubt it? What if I were to tell you
it’s 16,000 times louder than what you just heard here? [Silence] Can you see how that
would be impactful on marine species