Finland
Earth from space: Ethereal algal vortex blooms at the heart of massive Baltic 'dead zone'
In 2018, satellite images captured a stunning spiral of cyanobacteria blooming in the Baltic Sea. The swirling mass of microbes helped to create a massive "dead zone" the size of West Virginia that starved the surrounding water of oxygen.
What's in the photo? A swirling mass of algae trapped in an ocean vortex.
Which satellite took the photo? Landsat 8.
When was it taken? July 18,… [+3093 chars]
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