Whereas Blood Falls had a little over 9% of its eukaryotes in common with the ocean, the Dry Valleys showed only about 1% similarity, according to the study. Contact me with news and offers from other Future brands Receive email from us on behalf of our trusted partners or sponsorsResearchers tried to determine if microbes at Blood Falls are distinct community from the surrounding region's assemblages. (Image credit: Bryan Minnea)The results also showed that the air near Blood Falls contained only a tiny proportion of marine microorganisms, suggesting that present-day winds can't fully explain the microbial composition of Blood Falls, the researchers wrote. (Image credit: MARK RALSTON/POOL/AFP via Getty Images)Therefore, an ancient seawater origin is the most likely explanation for the microorganisms found at Blood Falls today, the team concluded. Molecular evidence for a relict marine community in an Antarctic Dry Valleys subglacial brine-fed system.