03/28/2025

Massive Iceberg Breaks Off Antarctica, Revealing Wonders Below

16:51 minutes

A large sponge, a cluster of anemones, and other life is seen nearly 230 meters deep at an area of the seabed that was very recently covered by the George VI Ice Shelf, a floating glacier in Antarctica
A large sponge, a cluster of anemones, and other life is seen nearly 230 meters deep at an area of the seabed that was very recently covered by the George VI Ice Shelf, a floating glacier in Antarctica. The size of this specimen suggests this community has been active for decades, perhaps even hundreds of years. Credit: ROV SuBastian / Schmidt Ocean Institute
A ship next to a large iceberg floating in the ocean
A research vessel maneuvers around icebergs in the Bellingshausen Sea off Antarctica. Credit: Alex Ingle / Schmidt Ocean Institute

In January, an iceberg the size of Chicago splintered off from the Antarctic Peninsula and drifted away in the Bellingshausen Sea.

As luck would have it, a team of scientists was nearby on a research vessel, and they seized the chance to see what was lurking on the seafloor beneath that iceberg—a place that had long been covered, and nearly impossible to get to.

They found a stunning array of life, like octopuses, sea spiders, and crustaceans, as well as possible clues to the dynamics of ice sheets.

Host Ira Flatow talks with the expedition’s two chief scientists: Dr. Patricia Esquete, marine biologist at the University of Aveiro in Portugal, and Dr. Sasha Montelli, glaciologist and geophysicist at University College London.


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Segment Guests

Patricia Esquete

Dr. Patricia Esquete is a marine biologist at the University of Aveiro in Aveiro, Portugal.

Sasha Montelli

Dr. Sasha Montelli is a glaciologist and geophysicist at University College London in London, England.

Segment Transcript

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Meet the Producers and Host

About Rasha Aridi

Rasha Aridi is a producer for Science Friday and the inaugural Outrider/Burroughs Wellcome Fund Fellow. She loves stories about weird critters, science adventures, and the intersection of science and history.

About Ira Flatow

Ira Flatow is the founder and host of Science FridayHis green thumb has revived many an office plant at death’s door.

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