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Aerial view of fractured sea ice floating in the Arctic Ocean. Large white ice sheets are broken into irregular shapes, with deep blue melt ponds and dark open water channels visible between them.

Thinning Arctic Sea Ice

Sea ice is frozen seawater that floats in the ocean. This photo, taken from NASA’s Gulfstream V Research Aircraft on July 21, 2022, shows Arctic sea ice in the Lincoln Sea north of Greenland.

Image Credit: NASA/Rachel Tilling

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