Chicago-Sized Iceberg Breaks Away From Ice Sheet, Revealing Thriving Ecosystem

Learn more about the ecosystem that’s remained under the ice for centuries.

By Monica Cull
Apr 1, 2025 9:50 PM
Aerial view of iceberg
Aerial view of an iceberg near Antarctica, but not associated with this story. (Image Credit: Dr_Flash/Shutterstock)

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In January 2025, researchers on the Schmidt Ocean Institute’s R/V Falkor (too) had to divert their plans after an iceberg roughly the size of Chicago broke away from the George VI Ice Shelf, a floating glacier that had been attached to the Antarctic Peninsula ice sheet.

As the iceberg broke away, it exposed an area of seabed previously unseen by humans. There, they found it teeming with a variety of sea life. 

An Iceberg the Size of the Windy City

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