From the moment that the biologist Dr Heike Vester presses play, the sound of the static of the fjord fills the room. First comes the constant, steady rumbling of a boat engine. Then, every eight seconds, like a foreboding bass drum, comes the explosion of seismic airguns – extremely loud blasts used in oil and gas exploration that can travel vast distances underwater.
And finally, dancing above it all – and at times drowned out by it – are the soaring vocalisations of whales.
