By Kate O'Toole and Miranda Tetlow - ABC News
Silvano has been studying the wrecks since the early 90s, completing a Masters and a PhD on the subject.
He thinks these World War Two wrecks are just as important as the ancient rock art shelters we also boast in the Territory...
It's a lesson in underwater archaeology on The Guestroom, as we take you diving, surveying and into the intricacies of heritage listing in Northern Territory waters.
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