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. 2023 Apr 20;3:33. doi: 10.1038/s43705-023-00239-3

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© The Author(s) 2023

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — A Sites sampled in the Northwest Atlantic Ocean. B ROV footage from the background site “175NW”. C ROV footage from the hydrocarbon seep site “Purple Haze”. D Image of the 31 cm long core taken from site “175NW”. E Image of the 36 cm long core taken from site “Purple Haze”. F A Nanopore MinION sequencing run performed while at sea during the sampling expedition.