World's Largest Iceberg A23a Drifts Away from Antarctica

The iceberg, over twice the size of Greater London, is moving at a rate of three miles a day after being grounded for over 30 years.

The world's largest iceberg, A23a, is moving away from Antarctica at a rate of three miles each day. The iceberg, which is more than twice the size of Greater London, had been grounded on the ocean floor for over 30 years.
A23a is one of the world's oldest icebergs, having broken off from the Filchner Ice Shelf in August 1986. It has been drifting since 2020 and is now heading towards the Southern Ocean.
Scientists are unsure why A23a is moving again, but suggest it may have thinned slightly over time, gaining enough buoyancy to lift off the ocean floor and be pushed by ocean currents.
The iceberg's movement could potentially disrupt wildlife if it ends up near South Georgia Island, over 1,000 miles east of South America, where it could interfere with the foraging of seals, penguins, and other seabirds.
While A23a's movement is a natural occurrence, climate change is causing Antarctica to lose ice at a significant rate. In September, the National Snow and Ice Data Center announced that Antarctic sea ice reached its lowest annual maximum in recorded history.