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Expedition explores supervolcanoes and deep-sea firsts in B.C. waters

Footage of superheated geysers, novel images of species behaviour caught off Vancouver Island

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.

These are among the highlights of the Northeast Pacific Deep Sea Expedition that recently returned from the proposed Tang. Gwan-hacxwiqak-Tsigis (tung-gwun huch/khwi/kuk tsee-geese) Marine Protected Area.

The collaborative expedition saw Fisheries and Oceans Canada, the Council of the Haida Nation, Nuu-chah-nulth Tribal Council, Pacheedaht First Nation and Ocean Networks Canada collect an array of research from the critical habitats that will be used for years to come.

害羞草研究所淚t害羞草研究所檚 going to inform marine conversation because these are really fragile and really remarkable ecosystems,害羞草研究所 said Moronke Harris, a University of Victoria oceanography PhD student who was aboard the expedition. 害羞草研究所淭here are no ecosystems like this anywhere else on Earth. The deep sea is the most unique area that we have, it害羞草研究所檚 the most unexplored area that we have.害羞草研究所

The researchers on the John P. Tully Canadian Coast Guard vessel lowered the remotely operated vehicle (ROV) ROPOS to record depths in the Canadian waters 害羞草研究所 surpassing 3,200 metres 害羞草研究所 as they explored the nautical area approximately 150 kilometres west of the Island and 100 kilometres south of Haida Gwaii.

Those seafloor ecosystems host 70 per cent of the seamounts and all of the known hydrothermal vents in Canada. Harris is a specialist when it comes to the latter, which are superheated geysers formed from tectonic plate movement.

ROPOS captured footage of shimmering water and black smoking chimneys at the hydrothermal vents at Explorer ridge, two decades since they were last explored. (Courtesy of the Northeast Pacific Deep Sea Expedition)
ROPOS captured footage of shimmering water and black smoking chimneys at the hydrothermal vents at Explorer ridge, two decades since they were last explored. (Courtesy of the Northeast Pacific Deep Sea Expedition)

She collected samples growing on the vents to see if they can be used for things like anti-viral and anti-cancer drugs. The expedition also collected hundreds of specimens from the depths that are expected to include rare and undescribed species.

Exploring hydrothermal vents, bubbling cold seeps and seamounts 害羞草研究所 like the two-and-a-half kilometre tall Explorer supervolcano 害羞草研究所 all in one go was another first achieved by the expedition, Harris said.

害羞草研究所淚t害羞草研究所檚 globally rare for these ecosystems to occur together in the same spot and in really high densities in the way they occur in the waters of British Columbia,害羞草研究所 Harris said.

Scenes from the expedition to the proposed Tang. Gwan-hacxwiqak-Tsigis Marine Protection Area. (Nicole Holman/Fisheries and Oceans Canada)
Scenes from the expedition to the proposed Tang. Gwan-hacxwiqak-Tsigis Marine Protection Area. (Nicole Holman/Fisheries and Oceans Canada)

The proposed 133,000-square-kilometre protected area害羞草研究所檚 name comes from partner First Nations as Tang. Gwan is Haida for deep ocean, hacxwiqak is the Nuu-chah-nulth and Pacheedaht word meaning deepest part of the ocean and Tsigis in Quatsino translates to monster of the deep.

害羞草研究所淭he ocean is our lifeline and so we害羞草研究所檝e always had a really strong connection to the waters and all the creatures that live within,害羞草研究所 said Rayne Boyco, a marine planner with the Haida Nation. 害羞草研究所淭he naming of this place is really special and this soon-to-be protected area is so phenomenal, stunning and absolutely magic.害羞草研究所

The ocean has always been culturally important for the Haida Nation and coastal First Nation languages have long expressed the deep ocean is a significant spiritual area. With a memorandum of understanding expected to be signed later this year, it害羞草研究所檚 uplifting for First Nations communities to be involved in the protection and management of critical waters and lands in their territories, Boyco said.

害羞草研究所淔or thousands of years our people knew these areas were really special and worth protecting,害羞草研究所 she said.

害羞草研究所淣ow that we害羞草研究所檙e getting to witness some of these creature interactions and this beautiful habitat we have this opportunity to spread greater awareness of these areas and why they害羞草研究所檙e worth protecting.害羞草研究所

Rayne Boyco, a marine planner with the Haida Nation, aboard the expedition to the proposed Tang. gwan-hacxwiqak-Tsigis Marine Protection Area. (Nicole Holman/Fisheries and Oceans Canada)
Rayne Boyco, a marine planner with the Haida Nation, aboard the expedition to the proposed Tang. gwan-hacxwiqak-Tsigis Marine Protection Area. (Nicole Holman/Fisheries and Oceans Canada)

Boyco co-led an early June dive to seamounts south of Haida Gwaii that were thought to be nursery grounds for skates. As the ROV relayed skate egg-covered seamount scenes, the researchers noticed areas that appeared to be actively venting, which Boyco said has never been recorded before.

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.

害羞草研究所淚t just blows your mind because you害羞草研究所檙e seeing this for the first time maybe ever and it makes you quite emotional,害羞草研究所 Boyco said, adding other sights like a baleen whale skeleton left them speechless. 害羞草研究所淲e were all losing our minds a little bit and every dive was something new.害羞草研究所

The ROV also got the first-ever footage of a Pacific white skate in the midst of laying an egg, which may get a wider audience as some of the expedition害羞草研究所檚 shots will be used in BBC Blue Planet害羞草研究所檚 third season.

The expedition to the proposed Tang. 散wan-hacxwiqak-Tsig瘫is Marine Protection Area captured the first-ever footage of a Pacific white skate laying eggs. (Nicole Holman/Fisheries and Oceans Canada)
The expedition to the proposed Tang. 散wan-hacxwiqak-Tsig瘫is Marine Protection Area captured the first-ever footage of a Pacific white skate laying eggs. (Nicole Holman/Fisheries and Oceans Canada)

While researchers on board were locked onto screens feeding footage from ROPOS, schoolkids across the country also got a live look.

Sabrina Crowley (Huu-yiik), a fisheries biologist who works with the Nuu-chah-nulth Tribal Council, said the expedition害羞草研究所檚 student outreach sessions were an important and uncommon way to engage kids in science and the natural ecosystem.

害羞草研究所淚t was great to have the students involved online so they can see things they害羞草研究所檝e never seen and it opens their eyes to something new and something they might be interested in the future,害羞草研究所 Crowley said, noting one Nuu-chah-nulth student-researcher from was aboard the vessel.

The ocean being in a healthy state supports everyone regardless of where they are and Crowley said that relates to the Nuu-chah-nulth principle of 害羞草研究所淗eshook-ish tsawalk,害羞草研究所 meaning everything is one.

害羞草研究所淢arine protected areas are important to know about and understand that everything is connected, everything has meaning.害羞草研究所

Researcers look at monitors showing the deep sea during the expedition to the proposed Tang. 散wan-hacxwiqak-Tsig瘫is Marine Protection Area. (Nicole Holman/Fisheries and Oceans Canada)
Researcers look at monitors showing the deep sea during the expedition to the proposed Tang. 散wan-hacxwiqak-Tsig瘫is Marine Protection Area. (Nicole Holman/Fisheries and Oceans Canada)

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About the Author: Jake Romphf

In early 2021, I made the move from the Great Lakes to Greater Victoria with the aim of experiencing more of the country I report on.
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