Pacific seamounts 2018 expedition report (Pac2018-103 & NA097) / Heidi Gartner, Tammy Norgard, Jaasaljuus Yakgujanaas, Robert Rangeley, Mandy Leith, Hugh MacIntosh and Cherisse Du Preez.: Fs97-6/3460E-PDF

"From July 5-21, 2018, the Council of the Haida Nation, Fisheries and Oceans Canada, Oceana Canada, and Ocean Networks Canada embarked on an expedition to explore seamounts in the northeast Pacific Ocean off the coast of British Columbia (PAC 2018-103; NA097). The expedition was conducted aboard the Ocean Exploration Trust’s vessel Nautilus where the scientists used state-of-the-art technology to map the seafloor, conduct oceanographic studies, and collect imagery of the life found on and around seamounts. During the expedition, 2,500 km of seafloor was mapped. Oceanographic samples collected included temperature, depth, conductivity, and dissolved oxygen for all scientific dives, bongo net casts to examine water column communities, discrete water samples for eDNA analysis, plus an autonomous mooring for one year. Ten scientific dives were conducted on six seamounts (Pierce/Davidson, Hodgkins, SGaan Kinghlas-Bowie, Dellwood, Dellwood South, and Explorer) using the remotely operated vehicles Hercules and Argus. The dives captured images of never-before-seen habitats, species, and behaviours for seamounts. The science team used the submersibles to collect 570 specimen vouchers and tissue samples, 48 Niskin water samples for eDNA, and 15 push cores for sediment analysis. During the dives 29 physical markers were deployed to establish long-term monitoring sites. In addition, science communication was a priority for the expedition partners, and all dives were live-streamed online, with multiple media and outreach sessions, to engage the general public. Over 3.7 million people were reached on social media, 130 countries watched the dives online, and over 180 media stories were generated across radio, television, and print"--Abstract, page viii.

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publications.gc.ca/pub?id=9.906663&sl=0

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