Now he sees bright pink and red algae blooms every year. Dr. Matt DaveyScientists like Maréchal think these algae blooms are getting larger and more frequent as rising global temperatures melt glaciers worldwide. Glacier algae seems to be booming, but scientists have a lot to learnResearcher Matt Davey samples snow algae at Lagoon Island, Antarctica. Ice algae and snow algae are different types of microorganisms, and different fields of study, but they both affect glaciers. A strip of "blood snow" filled with red algae cuts across a dark bloom of purple algae in Greenland.

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