A group of scientists, including the researchers from the White Sea Biological Station, Lomonosov Moscow State University has studied dispersal routes of cladocerans through Northern Eurasia, which are a food for many fish species. The scientists have shown that at least several cladoceran taxa began colonization of the whole Palearctic from its north, and some of them from the Beringian region. The Bering Strait has closed numerous times in the past; modern-day Kamchatka, Chukotka, Alaska and a part of the Aleutian Islands were once a part of Beringia. The results of this study are published in PLOS ONE.