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Former British Base A, now a museum and post office at Port Lockroy on tiny Goudier Island, Antarctica, Polar Regions

The Argentine Research Station Camara on Half Moon Island, South Shetland Islands, Antarctica, Polar Regions

British Antarctic Survey Research Station at King Edward Point, South Georgia, UK Overseas Protectorate, Polar Regions

Close-up of foot of captive Galapagos giant tortoise (Chelonoidis spp), Charles Darwin Research Station, Santa Cruz Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Gentoo penguin (Pygoscelis papua), breeding colony at the Chilean Research Station Base Gonzalez Videla, Antarctica, Polar Regions

Giant Tortoise at Charles Darwin Research Station, Puerto Ayora, Santa Cruz (Indefatigable) Island, Galapagos, UNESCO World Heritage Site, Ecuador, South America

Captive Galapagos giant tortoise (Chelonoidis spp), Charles Darwin Research Station, Santa Cruz Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

Captive Galapagos giant tortoise (Chelonoidis spp), Charles Darwin Research Station, Santa Cruz Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

The boat house at the Argentine Research Station Base Brown, Paradise Bay, Antarctica, Polar Regions

Captive Galapagos giant tortoises (Chelonoidis spp), Charles Darwin Research Station, Santa Cruz Island, Galapagos Islands, UNESCO World Heritage Site, Ecuador, South America

King Edward Point research station at the foot of the snow covered Allardyce Range, South Georgia, Polar Regions

Snow covers the Argentine Research Base in the Melchior Islands, Dallmann Bay, Antarctica, Polar Regions

The Lindblad Expeditions ship National Geographic Explorer on approach to the United States Research Station at Palmer Base, Antarctica, Polar Regions

The Lindblad Expeditions ship National Geographic Explorer on approach to the United States Research Station at Palmer Base, Antarctica, Polar Regions

Penguin colony, English Research Station, Port Lockroy, Antarctic Peninsula, Antarctica, Polar Regions

Vernadsky Research Base, the Ukrainian Antarctic station at Marina Point on Galindez Island in the Argentine Islands, Antarctica, Polar Regions

Vernadsky Research Base, the Ukrainian Antarctic station at Marina Point on Galindez Island in the Argentine Islands, Antarctica, Polar Regions

Charles Darwin Research Station, Puerto Ayora, Santa Cruz (Indefatigable) Island, Galapagos, Ecuador, South America

Dark clouds over the mountains and glaciers of Port Lockroy research station, Antarctica, Polar Regions

Kayakers paddling through the water near the Port Lockroy research station, Antarctica, Polar Regions

Dark clouds over the mountains and glaciers of Port Lockroy research station, Antarctica, Polar Regions

Gentoo Penguins at the Argentine antarctic research station in stunning coastal scenery beneath Mount Walker in Paradise Bay off Graham Land on the Antarctic Peninsular. the Peninsular is one of the most rapidly warming places on the planet.

A Campbell Stokes Sunshine Recorder, which measures hours of sunlight at Base Orcadas, which is an Argentine scientific station in Antarctica, and the oldest of the stations in Antarctica still in operation. It is located on Laurie Island, one of the South Orkney Islands, just off the Antarctic Peninsular. The Antarctic Peninsular is one of the fastest warming places on the planet.

Base Orcadas is an Argentine scientific station in Antarctica, and the oldest of the stations in Antarctica still in operation. It is located on Laurie Island, one of the South Orkney Islands, just off the Antarctic Peninsular. The Antarctic Peninsular is one of the fastest warming places on the planet.

Supplies at Base Orcadas which is an Argentine scientific station in Antarctica, and the oldest of the stations in Antarctica still in operation. It is located on Laurie Island, one of the South Orkney Islands, just off the Antarctic Peninsular. The Antarctic Peninsular is one of the fastest warming places on the planet.

Supplies at Base Orcadas which is an Argentine scientific station in Antarctica, and the oldest of the stations in Antarctica still in operation. It is located on Laurie Island, one of the South Orkney Islands, just off the Antarctic Peninsular. The Antarctic Peninsular is one of the fastest warming places on the planet.

Base Orcadas is an Argentine scientific station in Antarctica, and the oldest of the stations in Antarctica still in operation. It is located on Laurie Island, one of the South Orkney Islands, just off the Antarctic Peninsular. The Antarctic Peninsular is one of the fastest warming places on the planet.

The Argentine antarctic research station Almirante Brown in stunning coastal scenery beneath Mount Walker in Paradise Bay off Graham Land on the Antarctic Peninsular. the Peninsular is one of the most rapidly warming places on the planet.

The Argentine antarctic research station Almirante Brown in stunning coastal scenery beneath Mount Walker in Paradise Bay off Graham Land on the Antarctic Peninsular. the Peninsular is one of the most rapidly warming places on the planet.

Base Orcadas is an Argentine scientific station in Antarctica, and the oldest of the stations in Antarctica still in operation. It is located on Laurie Island, one of the South Orkney Islands, just off the Antarctic Peninsular. The Antarctic Peninsular is one of the fastest warming places on the planet.

The Argentine antarctic research station Almirante Brown in stunning coastal scenery beneath Mount Walker in Paradise Bay off Graham Land on the Antarctic Peninsular. the Peninsular is one of the most rapidly warming places on the planet.

The National Geographic Endeavour anchored at the old Norwegian whaling station at Whaler's Cove, Deception Island

Whaling museum (showing female humpback whale fetus taken from dead mother) at the Grytviken Whaling Station on South Georgia Island, Southern Atlantica Ocean

Vernadsky Research Base (Akademik Vernadsky), Ukrainian Antarctic Station at Marina Point on Galindez Island in the Argentine Islands, Antarctica

Vernadsky Research Base (Akademik Vernadsky), Ukrainian Antarctic Station at Marina Point on Galindez Island in the Argentine Islands, Antarctica

Vernadsky Research Base (Akademik Vernadsky), Ukrainian Antarctic Station at Marina Point on Galindez Island in the Argentine Islands, Antarctica

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) with photographer at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

An adult Leucistic Gentoo penguin (Pygoscelis papua) nesting and incubating two eggs at Gabriel Gonzales Videla Research Station, Antarctica

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Young Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the tortuguero breeding station, Puerto Villamil on Isabela Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

An adult Leucistic Gentoo penguin (Pygoscelis papua) nesting and incubating two eggs at Gabriel Gonzales Videla Research Station, Antarctica

An adult Leucistic Gentoo penguin (Pygoscelis papua) nesting and incubating two eggs at Gabriel Gonzales Videla Research Station, Antarctica

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Two adult captive Galapagos giant tortoise (Geochelone elephantopus) at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Group, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Lindblad Expeditions guests visiting the Argentine research station Almirante Brown in Paradise Bay in Antarctica as part of expedition travel. NO MODEL RELEASES FOR THIS IMAGE.

Two adult captive Galapagos giant tortoise (Geochelone elephantopus) at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Group, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Photographers with captive Galapagos giant tortoise (Geochelone elephantopus) at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Archipelago, Ecuador

Captive Galapagos giant tortoise (Geochelone elephantopus) being fed at the Charles Darwin Research Station on Santa Cruz Island in the Galapagos Island Group, Ecuador

The Argentine research station Almirante Brown in Paradise Bay (Harbour) on the Danco Coast of the Antarctic Peninsula.

Algae colors the water in aquaculture ponds at the University of Georgia Tifton Campus Coastal Plain Experiment Station

Algae colors the water in aquaculture ponds at the University of Georgia Tifton Campus Coastal Plain Experiment Station

View from Gornergrat station to Kulmhotel, the highest hotel in the Swiss Alps (3100 m) at Gornergrat, Zermatt, Valais, Switzerland

Kulmhotel, High Altitude Research Station KOSMA and TIRGO Observatory, Gornergrat, Matterhorn, Mount Cervin, Zermatt Valais Switzerland