The world's largest iceberg, known as A23a, is on a collision course with South Georgia Island, a delicate ecosystem that is home to penguins and seals.

Antarctic ice shelves are shrinking mainly due to frequent small calving events, while major iceberg break-offs remain rare and unchanged in frequency. A recent study by geologists and geographers at

Measuring roughly 1,350 square miles (3,500 square kilometers) across, A23a is the world's largest and oldest iceberg according to AFP News. Its imposing size and slow, steady movement have captivated oceanographers and researchers alike, though predicting its exact path has proven difficult due to the unpredictable forces of ocean currents.

The world's biggest iceberg is drifting toward a tiny south Atlantic island, potentially affecting the wildlife there, including seals and penguins.

While warming temperatures are driving a widespread loss of ice shelves, major calving events have not increased in frequency or size.

Visible from space, the world’s largest iceberg is headed towards a remote Antarctic island, threatening local animals.

The trillion-ton slab of ice named A23a could slam into South Georgia Island and get stuck or be guided around it by currents.

For over 30 years, the A23a iceberg stayed anchored to the Antarctic Weddell Sea floor before it shrank and lost its grip on the seafloor which turned it into a massive floating fragment of ice. The iceberg has been floating for the past two years.

If it gets stuck near South Georgia Island, that could make it hard for penguin parents to feed their babies and some young could starve.

The world's biggest iceberg -- more than twice the size of London -- could drift towards a remote island where a scientist warns it risks disrupting feeding for baby penguins

A23a has followed roughly the same path as previous massive icebergs, passing the east side of the Antarctica Peninsula through the Weddell Sea along a route called "iceberg alley." That is the ...

Currently, the gigantic iceberg A23a is moving toward the South Atlantic Ocean and will strike South Georgia Island in two to four weeks.