Half Moon Island | What to Know About Visiting This Small Antarctic Island

Generally, the South Shetland Islands are the opening chapters of an Antarctic journey and the introduction leaves most guests captivated. The combination of stunning landscapes, wildlife and historical intrigue makes these islands a paradise for wilderness enthusiasts.

Among this island group, the Half Moon Island is a popular stop for Antarctic cruises. As one of the first Antarctic landmass that adventurers set their foot on after crossing the Drake Passage, it offers an enchanting experience.

Where is Half Moon Island?

This fairly small crescent-shaped island is on the McFarlane Strait. Located between the much larger Greenwich and Livingston Islands, Half Moon Island forms the entrance to the Moon Bay in Antarctica. The island is around 2 kilometres long and has a total land area of around 171 hectares.

The barren and rocky island is mostly an outcropping of rocks and small hills. Along its centre and south-eastern shorelines, there are a series of cobbled beaches. The steep scree slopes lead to the north, where there is a small summit.

Wildlife on Half Moon Island

Most Antarctic travel guides will tell you about the plethora of wildlife viewing opportunities on South Shetland Islands. The main attraction of Half Moon Island is a Chinstrap penguin colony - the reason for it being declared as an Important Bird Area by BirdLife International. Other confirmed breeders on the island include the skua, kelp gull, snowy sheathbill, Wilson’s storm petrel, Antarctic tern, and blue-eyed shag.

As you step on the beach, you will find Weddell and elephant seals hauling out. A few frolicking gentoo penguins can also be around. Occasionally, a lone Macaroni penguin has also been spotted on the island. In the right season, you might spot whales patrolling the surrounding waters.

Plant life

The plant life on the island consists of multiple varieties of mosses and lichens growing on the beaches and the rocky outcrops. Antarctic hair grass, one of the two flowering plants found in the continent, is also seen growing in some areas.

Things to do on Half Moon Island

Being a small island does not make Half Moon any less appealing in terms of sights and sounds. For many guests visiting Antarctica, this is the first encounter with penguins and seals.

Admire nature

From almost every point on Half Moon island, you get stunning views of the rugged and snow-covered Livingston Island. While walking on the beach, you might hear the sound of a glacier cracking and giving birth to an iceberg. To get the best views of the dramatic black and white landscape, take a long hike and climb to the top of the hill.

Facts about Half Moon Island

Being an eco-sensitive zone, there are strict guidelines for visitors on the island. While there are no stations here, there is a rotting dory lying near the landing zone. Other than that, you may spot a few scientists busy with their observations around the beach.

Climate and weather

Though relatively mild by Antarctic standards, Half Moon Island remains cold and windy throughout the year. The climate is classified as cold maritime and the temperatures in summer can rise to 2°C. In winter, the lowest temperature can dip to -12°C. Precipitation is fairly consistent throughout the year and most of it is in the form of snow.

Planning your trip to Half Moon Island

The pristine environment of South Shetland Islands makes it a perfect destination for adventurers and explorers. Since the journey is only possible in summer, plan ahead and make sure to prepare the right packing list for tackling the harsh Antarctic climate

An Antarctic cruise on a small ship is one of the best ways to experience the immensity of the continent while ensuring minimum impact on the environment.

Visit Half Moon Island with Secret Atlas

With Secret Atlas, you can get close to the heart of Antarctica that lives and breathes in fascinating ways. Our Antarctica wildlife and photography expeditions focus on wildlife viewing and providing the best photographic experiences on the continent. We aim to explore the last great wilderness on the planet responsibly and in a manner that is free from crowds.

To plan your Antarctic trip with us, connect with our team.