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World's largest iceberg on crash course with island, putting millions of penguins in danger (news.sky.com)

submitted 2 days ago by concrete_baby to c/[email protected]

21 comments fedilink hide all child comments

The world's largest iceberg is on a collision course with the British territory of South Georgia - potentially putting millions of penguins and seals in danger.

The trillion-tonne slab of ice, named A23a, broke free from its position last month and started drifting northwards.

The "megaberg" - which is twice the size of Greater London and 130 feet tall - is expected to approach the remote island off Antarctica in the next two to four weeks.

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[–] [email protected] 9 points 2 days ago (2 children)

130 feet tall with 9/10 underwater means about 400 meters thich. Nice. Also :

"The whole ecosystem in the Southern Ocean is very resilient to these events," he wrote. "It has evolved with these icebergs being a factor for hundreds of thousands of years."

[–] [email protected] 8 points 2 days ago (2 children)

I mean, I kind of take exception to that quote. Wildlife doesn't "evolve" to take into account 1/10,000 year events. That's like saying an animal evolves to deal with meteor strikes. It just doesn't happen. You can't evolve to deal with entire islands being run over and demolished because it just doesn't happen often enough to be a significant selection pressure. It's just bad luck.

Sure the ecosystem of the ocean will be fine, because icebergs are part of the ocean and part of its ecosystem. But the wildlife within that ocean may be significantly affected like entire populations being wiped out.

It's like saying global warming isn't an issue because the earth will survive and adapt. Most species alive today will go extinct, but the earth will survive.

[–] [email protected] 6 points 2 days ago

There's also this part of the article.

Experts fear for the island's rich wildlife. If the iceberg gets wedged in the shallow waters close to the island, it could block vital pathways for penguins to get food for themselves and their chicks.

It's not going to run over the island. It's going to get stuck near it and fuck up their feeding grounds.

[–] [email protected] 1 points 1 day ago

Yes, it can happen. Population choke points drive rapid evolution.

[–] [email protected] 4 points 2 days ago (1 children)

If it's that big, how can it even hit the island? Wouldn't it be grounded long before?

[–] [email protected] 3 points 2 days ago

Momentum is a pretty powerful thing.