In the "Beringia" National Park in Chukotka, not only are whale tails being cataloged, but for the first time, scientists have decided to measure the bodies of these animals. Since late August, annual monitoring of cetaceans has begun in the Seniavin Strait. Every summer, in the Seniavin Strait – in the northwestern part of the Bering Sea, off the coast of the Chukotka Peninsula – the densest grouping of cetaceans in Russia forms. Humpback and gray whales can be found here, along with carnivorous orcas. Occasionally, minke whales are observed, and there has even been a sighting of a Japanese right whale, explain the park's specialists. Whales do not come to the strait by chance, as, unlike the shallow shelves of the Bering and Chukotka seas, the strait contains areas with depths of up to 130 meters – which favor the development of zooplankton, the main food source for humpback whales. The shallow coastal areas of the strait are rich in zoobenthic communities – the primary food for gray whales. Throughout the history of observations in the park, 14 species of cetaceans have been recorded, and its fantastically picturesque surroundings are noted. "Beringia" is not only home to whales: its fauna is unmatched in terms of diversity among protected areas in the tundra and forest-tundra zones of Russia. Along its coasts are around 50 major bird colonies, and every summer, over 3 million birds are counted here.