Signs of life emerging almost four years on from eruption of Hunga Tonga Hunga Ha'apai volcano
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It's been more than three and a half years since one of the most powerful volcanic eruptions in recent history left devastation in Tonga. While the dust has settled, the underwater environment has not yet returned to its former state. An Australian-led scientific team has been studying the surrounding seabed, with researchers from across the world looking for signs of life.
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