King George, the largest of the South Shetland Islands, evolved from a sealing and whaling hub into a unique global center for Antarctic scientific research and international cooperation.
It was discovered in 1819, by British mariner William Smith, who named it after the reigning British monarch, King George III. Smith's discovery opened up the region to a wave of commercial interest…in the years that followed, the island became a prime location for sealers and whalers.
Sealing was the first major commercial activity on the island, primarily in the beginnings of the 19th century. British and American sealers targeted the vast populations of Antarctic fur seals and Southern elephant seals. This period was marked by intense competition and secrecy, with little record-keeping as companies sought to protect their hunting grounds. The era of sealing led to the near-total extermination of the seal populations in the area by the end of the 19th century, from millions to just a few thousand individuals. Nowadays, given specific conservation and protection policies, added to the status of Antarctica as a continent dedicated to peace and science (with the Antarctic Treaty signing), Antarctic fur seals have recovered successfully: the global population was estimated to have rebounded to several million animals
In the early 20th century, the island became a base for Norwegian and Chilean whaling operations, as they pursued the fast-swimming rorqual whales…but that is another chapter of the story.
The Antarctic Treaty signing in 1959 accelerated the transition from commercial exploitation to scientific collaboration. Today, King George Island is home to the world's greatest concentration of national research stations.
More than 10 countries, including Argentina, Brazil, Chile, China, South Korea, Peru, Poland, Russia and Uruguay, maintain year-round or seasonal stations. This high concentration has earned the island the nickname "Gateway to the Antarctic" and the "Unofficial Capital of Antarctica."
A key reason for this concentration is the island's unique Antarctic airport! A 1,300 m long airstrip maintained by the Chilean base, Presidente Eduardo Frei Montalva, provides a vital air bridge for personnel and supplies, bypassing the day and a half navigation of the infamous Drake Passage. This makes the island a crucial hub for logistical support for bases throughout the Antarctic Peninsula…and also for tourism! The airstrip serves as the primary “fly-cruise” gateway for visitors to the Antarctic Peninsula region.
King George Island has many coves and inlets with incredible glacier views, where many stations can be spotted as you sail by ship or zodiac cruising:
Martel Inlet: Comandante Ferraz (Brazil)
Mckellar Inlet: Machu Picchu (Peru)
Ezcurra Inlet: Arctowski (Poland)
Potter Cove: Carlini (Argentina)
Maxwell Bay: Artigas (Uruguay), Frei Montalva (Chile), Julio Escudero (Chile), Bellingshausen (Russia), Great Wall (China)
The terrestrial flora of King George Island is, like the whole Antarctic continent, dominated by non-vascular plants. Given the fact that there is very little liquid water available (mostly in the form of ice!) and of course the harsh environmental conditions, Antarctica has no trees at all, and a limited number of vascular species. Mosses and lichens are the kings and queens of terrestrial vegetation.
Sites like Turret Point, at the eastern limit of King George Bay, have beautiful moss carpets that can be seen during the guided walks that can be done along its cobble beach, and lichens of the genus Xanthoria can be seen amongst its rock promontories.
The island is home to the only two native flowering plants that are found on the Antarctic Peninsula: the Antarctic hair grass (Deschampsia antarctica) and the Antarctic pearlwort (Colobanthus quitensis), a small, cushion-forming plant.
And of course, three of the beloved penguin species are confirmed breeders (have reproductive colonies) in different sites of the island: Adélie penguin (Pygoscelis adeliae), Chinstrap Penguin (Pygoscelis antarcticus) and Gentoo penguin (Pygoscelis papua). Besides the non-flying birds, the iconic Antarctic terns, Blue-eyed cormorants and the Southern giant petrels are commonly spotted.
As for marine mammals such as seals, Antarctic fur seals, Southern elephant seals and Weddell seals are commonly hauled out on the rocky shores.
King George Island's geology is a fascinating record of its origin as an ancient volcanic island arc, with a landscape shaped by millions of years of volcanic activity, faulting, and dramatic glacial cycles. This entire region is a volcanic arc that formed as the paleo-Pacific Plate (the Phoenix Plate) subducted beneath the Antarctic Plate. King George Island itself is composed almost entirely of igneous rocks, with evidence of multiple volcanic episodes.
For example, the amazing Penguin Island offers a landing site that resembles the views or a Mars-like landscape. Sighted in January 1820 by Edward Bransfield British expedition, this island was named because of the penguins occupying the shores. Adélie and Chinstrap penguins breed on different extremes of this island (and Antarctic terns, Skuas, Kelp gulls and Southern giant petrels also!).
However, the main feature of this site is the 170 m high cone of Deacon Peak, a dormant volcano. A guided walk can be done to and around the crater, as well as walking on the shore, where wood debris coming from the whaling era, and also whale bones, can be seen.
Southern elephant seals and Weddell seals regularly haul out 🙂
About the Author
Luciana was born in Rosario (Argentina). She is a Biologist (PhD), environmental interpretar, diver and polar guide, interested in how human activities connect in natural ecosystems and its biodiversity. She has more than 15 years of experience in polar expedition cruising, and also worked for 3 years for the Program of Environmental Management and Tourism of the Argentinean Antarctic Direction, as a scientific assistant and environmental officer in antarctic scientific stations. Currently, her base is in Bariloche (Patagonia).
Luciana is our resident Biologist and Outreach Manager at The Polar Travel Company
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