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.
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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