this post was submitted on 24 May 2025
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[–] Force_majeure123@aussie.zone 15 points 2 weeks ago (10 children)
[–] StudChud@aussie.zone 6 points 2 weeks ago (6 children)
[–] Force_majeure123@aussie.zone 8 points 2 weeks ago (5 children)

Those are thrombolites! Ancient bacterial (?) colonies that are still alive, they turn the air and stuff into calcium deposits

[–] StudChud@aussie.zone 4 points 2 weeks ago (1 children)

OMG THATS SO COOL!!!!

DOWN A RABBIT HOLE I GO!

[–] sqgl@beehaw.org 3 points 2 weeks ago

From the rabbit hole...

Both structures are created by cyanobacteria.

The name "cyanobacteria" (from Ancient Greek κύανος (kúanos) 'blue') refers to their bluish green (cyan) color,[5][6] which forms the basis of cyanobacteria's informal common name, blue-green algae.[7][8][9][note 2]

Common blue-green algae has magic properties!

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