On 21 November 2006 several large pieces were seen just 60 km (30 nmi) off the coast of Timaru, New Zealand—the largest measured about 1.8 km (1 nmi), rising 37 m (120 ft) from the surface of the ocean. As of 2018, four pieces remained that were large enough to be tracked by the National Ice Center (at least 70 km 2 or 20 sq nmi). [2] .

In 1956, an iceberg in the Antarctic was reported to be an estimated 333 kilometres (207 mi) long and 100 kilometres (62 mi) wide. Recorded before the era of satellite photography, the 1956 iceberg's estimated dimensions are less reliable. [1] The split of the A38-B iceberg is recorded in this series of images.

Iceberg 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 makes it …

On Jan. 22, 2025, NOAA’s GOES East satellite captured imagery of the world’s largest current iceberg, A23a, slowly drifting northeastward in the Southern Ocean.

4 天之前 · World's largest iceberg on the move after dislodging from ocean floor 04:09. The world's largest and oldest iceberg, named A23a, has run aground in shallow waters off the coast of South Georgia, a ...

3 天之前 · The world's largest iceberg appears to have run aground off the coast of a remote British island home to millions of penguins and seals — potentially threatening local wildlife, but also ...

3 天之前 · The world’s biggest iceberg seems to have come to a halt near a remote island in Antarctica, after months of drifting through open ocean.. A23a, as the iceberg is known, had briefly raised alarm ...

4 天之前 · The biggest iceberg in the world, named A23a, appears to have run aground after drifting around the Southern Ocean near Antarctica since 2020. Weighing nearly a trillion metric tonnes (1.1 ...

4 天之前 · 4 March, 2025 News stories ANTARCTICA: The world’s largest and oldest iceberg A23a has finally come to a standstill as it appears to have run aground near the sub-Antarctic Island of South Georgia. The giant A23a, which weighs nearly a trillion tonnes, calved from Antarctica’s Filchner Ice Shelf in 1986 and then remained grounded on the seabed in the Weddell Sea for over 30 years.

4 天之前 · The world’s largest iceberg, known as A23a, center, ran aground off the coast of the island of South Georgia, marked in red, last week. Credit... NASA. By Victor Mather. March 4, 2025.