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In this underwater image, bits of fuzzy brown balls and debris float up into the water from the sea floor, with blue water and the hazy figure of several people swimming in the background.

Drifting Cyanobacteria

OCEANOS students and instructors swim in the waters of Playa Melones, Culebra (Puerto Rico), as cyanobacteria overgrowth clogs the sea floor. The overgrowth is likely caused by runoff from an on-land source of pollution.

Image Credit: NASA/Milan Loiacono
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Image CreditNASA/Milan Loiacono
Size4000x6000px