Katlin Adamczyk, a marine geochemist with the U.S. Geological Survey, holds up rock samples
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Rock Samples
Katlin Adamczyk, a marine geochemist with the U.S. Geological Survey, holds up rock samples collected from the Aleutian Islands seafloor using human occupied vehicle Alvin during the 2025 Aleutian Arc expedition. Learn more
Credit

The Aleutian Arc: Integrated Exploration of Biodiversity at Priority Benthic Habitats (USGS/BOEM/NOAA/ONR). Photographer: Art Howard.

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Related Expedition
The Aleutian Arc: Integrated Exploration of Biodiversity at Priority Benthic Habitats