Expedition explores supervolcanoes and deep-sea firsts in B.C. waters
From observing global biodiversity hotspots around supervolcanoes and gas-spewing seeps that make up the tectonically mashed ocean floor off Vancouver Island to getting never-before-seen footage of deep-sea creatures that could soon star in a BBC nature series.
The researchers on the John P. Tully Canadian Coast Guard vessel lowered the remotely operated vehicle ROPOS to record depths in the Canadian waters – surpassing 3,200 metres – as they explored the nautical area approximately 150 kilometres west of the Island and 100 kilometres south of Haida Gwaii.
Exploring hydrothermal vents, bubbling cold seeps and seamounts – like the two-and-a-half kilometre tall Explorer supervolcano – all in one go was another first achieved by the expedition, Harris said. “For thousands of years our people knew these areas were really special and worth protecting,” she said.
Tests on the venting confirmed it was hotter than the ambient seawater, which supported the theory that the skates come from greater depths to lay their eggs on the seamounts because it helps speed up the years-long gestation process, effectively incubating them.
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