Specialists of the Scientific Center for Marine Biology named after. A.V. Zhirmunsky Far Eastern Branch of the Russian Academy of Sciences analyzed samples and found that tens of thousands of crustaceans – representatives of zooplankton of the genera Neocalanus, Pseudocalanus, Metridia and Microcalanus – were frozen into the ice. It turned out that due to the presence of carotenoid pigments in the bodies of the crustaceans, the water turned red. The phenomenon was recorded during monitoring in the area of ​​the Vostok Marine Biological Station in the bay of the same name. The discovered species of copepods form the basis of the zooplankton population in the bay in winter and are typical inhabitants of its open deep-sea areas, said specialists from the National Scientific Center for Marine Biology, Far Eastern Branch of the Russian Academy of Sciences.