Sergey Gorshkov / Black Grouse (Tetrao tetrix) males fighting at lek in the snow, Tver, Russia. April

Sergey Gorshkov / Aurora borealis over river, Putoransky State Nature Reserve, Putorana Plateau, Siberia, Russia

Sergey Gorshkov / Aurora borealis over valley, Putorana Plateau, Siberia, Russia

Franco Banfi / Scuba diver under ice next to large ice formation, Arctic circle Dive Center, White Sea, Karelia, northern Russia, March 2010. No release available.

Franco Banfi / Beluga whale (Delphinapterus leucas) swimming under ice, Arctic circle Dive Center, White Sea, Karelia, northern Russia. Captive

Franco Banfi / Scuba diver under ice, surfacing to the hole, viewed from underneath, Arctic circle Dive Center, White Sea, Karelia, northern Russia March 2010. No release available.

Franco Banfi / Scuba diver under ice and ice formation, Arctic circle Dive Center, White Sea, Karelia, northern Russia March 2010. No release available.

Franco Banfi / Beluga whale (Delphinapterus leucas) swimming under ice and exhaling air, with scuba diver in background, Arctic circle Dive Center, White Sea, Karelia, northern Russia, captive

Franco Banfi / Person well dressed for cold temperatures, Arctic circle Dive Center, White Sea, Karelia, northern Russia. No release available.

Franco Banfi / Scuba diver with special head hood for cold water diving, Arctic circle Dive Center, White Sea, Karelia, Northern Russia, April 2009. No release available.

Mark Carwardine / Tiger Conservation: Russian children learning about tiger conservation, Tiger Eco-Centre, Novopokrovka, northern Primorye, Russian Far East

Bryan and Cherry Alexander / Northern lights (Aurora borealis) over a Nenets herders' camp. Yamal Peninsula, Western Siberia, Russia, 2001.