A23a is a large tabular iceberg which calved from the Filchner–Ronne Ice Shelf in 1986. It was stuck on the sea bed for many years but then started moving in 2020. As of January 2025, its area is about 3,500 square kilometres (1,400 sq mi), which …

Dec 1, 2023 · The world's largest iceberg, A23a, is moving into the open waters near Antarctica after being essentially stuck in place for decades. It's seen here in satellite imagery from Nov. 15.

3 days ago · The route of A23a toward South Georgia Island. (Image credit: Omar Zaghloul/Anadolu via Getty Images) Measuring roughly 1,350 square miles (3,500 square kilometers) across, A23a is the world's ...

Jan 16, 2024 · Erosion is sculpting dramatic features in the world's biggest iceberg in what's likely to be the final months of its existence. A ship run by the Eyos expeditions company arrived at the frozen...

Aug 10, 2024 · The world's largest iceberg, A23a, is stuck again. For more than 30 years, the giant frozen block — equivalent to the size of Rhode Island — was grounded on the sea floor in Antarctic coastal ...

Aug 14, 2024 · The mega iceberg A23a is destined to melt after breaking free from Antarctica in 1986, but this pause in its journey is delaying its fate, experts say

Dec 16, 2024 · A23a has held the “largest current iceberg” title several times since the 1980s, occasionally being surpassed by larger but shorter-lived icebergs, including A68 in 2017 and A76 in 2021.

Dec 20, 2024 · About the size of Rhode Island, the iceberg known as A23a got stuck in an ocean vortex this summer, spinning in place for months. Now, it's free, and heading back into open Antarctic waters.

Jan 23, 2025 · The iceberg, called A23a, was previously “trapped” spinning around an undersea mountain for several months, according to Andrew Meijers, a physical oceanographer at the British Antarctic Survey.

Aug 15, 2024 · The colossal iceberg known as A23a has been slowly spinning in one spot of the Southern Ocean since April. Here’s what experts have to say on the phenomenon.