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A man in a navy long sleeve shirt and baseball cap stands in a boat with his back to the camera, steering a small white boat into a bay of water. The sky in the background is blue, spotted with white clouds.

Captain Armstrong

OCEANOS instructor Roy Armstrong sets out in the waters off of La Parguera, Puerto Rico, in search of an invasive algae called sargassum.

Image Credit: NASA/Milan Loiacono
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Image CreditNASA/Milan Loiacono
Size6000x4000px