NASA: National Aeronautics and Space AdministrationEarth Observatory

Image of the Day

Harmful Bloom in Lake Atitlán, Guatemala
November 28, 2009
Harmful Bloom in Lake Atitlán, Guatemala

A large bloom of cyanobacteria, more commonly known as blue-green algae, spread across Guatemala’s Lake Atitlán in green filaments and strands that are clearly visible in this simulated-natural-color image from November 22, 2009.

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last updated: November 28, 2009