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.

Todd Mintz / Iceberg dive, diver next to ice floe, Pond Inlet, Baffin Island, Nunavut, Canada, June

Chadden Hunter / Emperor penguins (Aptenodytes forsteri) males dive through openings in the sea ice to take their first swim in over 4 months as they have spent the bleak winter incubating their eggs. Cape Washington,...

Andrew Parkinson / 2020VISION / Adult Coot (Fulica atra) running on the surface of a lake, Derbyshire, England, UK, March 2010. Did you know? Coots can dive up to 2 metres.

Andrew Parkinson / Red kite (Milvus milvus) in swooping dive, Gigrin Farm, Mid Wales, UK, March.

Juergen Freund / Crinoids or featherstars covering a coral bommie with dive boat looming overhead, West New Britain, Papua New Guinea

Juergen Freund / Split level of dive boat "Seven Seas", coral reef and island, Komodo NP, Indonesia, August 2009.

Juergen Freund / Swim-through at dive site called Boo with colourful corals in the foreground. Misool, Raja Ampat, West Papua, Indonesia