In 2015 a team documented 5476 distinct kinds of viruses in the ocean. In 2016 the same team updated its count to 15,222. New study finds 195,728 distinct viral populations, a more than twelvefold increase. This lays groundwork for a better understanding of their impact on global nutrient cycles.

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In 2015 a team documented 5476 distinct kinds of viruses in the ocean. In 2016 the same team updated its count to 15,222. New study finds 195,728 distinct viral populations, a more than twelvefold increase. This lays groundwork for a better understanding of their impact on global nutrient cycles.