Antarctic seep emergence and discovery in the shallow coastal environment

Sarah Seabrook (), Cliff S. Law, Andrew R. Thurber, Yoann Ladroit, Vonda Cummings, Leigh Tait, Alicia Maurice and Ian Hawes
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Sarah Seabrook: Earth Sciences New Zealand
Cliff S. Law: Earth Sciences New Zealand
Andrew R. Thurber: Santa Barbara
Yoann Ladroit: Kongsberg Discovery AS
Vonda Cummings: Earth Sciences New Zealand
Leigh Tait: Earth Sciences New Zealand
Alicia Maurice: Earth Sciences New Zealand
Ian Hawes: University of Waikato

Nature Communications, 2025, vol. 16, issue 1, 1-9

Abstract: Abstract We report striking discoveries of numerous seafloor seeps of climate-reactive fluid and gases in the coastal Ross Sea, indicating this process may be a common phenomenon in the region. We establish the recent emergence of many of these seep features, based on their discovery in areas routinely surveyed for decades with no previous seep presence. Additionally, we highlight impacts to the local benthic ecosystem correlated to seep presence and discuss potential broader implications. With these discoveries, our understanding of Antarctic seafloor seeps shifts from them being rare phenomenon to seemingly widespread, and an important question is raised about the driver of seep emergence in the region. While the origin and underlying mechanisms of these emerging seep systems remains unknown, similar processes in the paleo-record and the Arctic have been attributed to climate-driven cryospheric change. Such a mechanism may be widespread around the Antarctic Continent, with concerning positive feedbacks that are currently undetermined. Future, internationally coordinated research is required to uncover the causative mechanisms of the seep emergence reported here and reveal potential sensitivities to contemporary climate change and implications for surrounding ecosystems.

Date: 2025
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DOI: 10.1038/s41467-025-63404-3

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