Tsar Bomba C), north of the Arctic Circle over the Novaya Zemlya archipelago in the Arctic Ocean. The bomb was dropped from an altitude of ; it was designed to detonate at a height of over the land surface ( above sea level) by barometric sensors. The original, November 1961, United States Atomic Energy Commission estimate of the yield was 55–60 megatons, but since 1992, all Russian sources have stated its yield as 58.6 megatons. First secretary Khrushchev warned in a filmed speech to the Supreme Soviet of the existence of a 100-megaton bomb (technically the design was capable of this yield.)
Franz Josef Land most common, although it breeds in the White Sea. Slightly less common is the bearded seal. Walruses were previously hunted, dramatically reducing the formerly abundant species. They have been internationally protected since 1952 and their numbers have since been on the rise, with between one and three thousand walruses living in the archipelago. The population is common with Svalbard and northern Novaya Zemlya. Minke whales, humpback whale, and beluga whales are commonly seen around the island, and less commonly orcas and narwhales, with the archipelago being located on the northern edge of their summer range. Fin whales were newly confirmed