Driven in part by fears that the frozen landscapes of Antarctica may be irreversibly melting away because of climate change, tourism to the bottom of the world is soaring. And experts warn that with more visitors comes an increased risk of contamination, illness and other damage to the continent.
While visitor numbers are still small — in part due to the high costs and time it can take — they are growing so fast that scientists and environmentalists are sounding alarms.
A deadly outbreak of the rare hantavirus aboard a Dutch ship on a weekslong polar cruise has brought attention to the growing tourism trend.
Photo: AP
Most expeditions head to the Antarctic Peninsula, one of the fastest-warming places in the world. From 2002 to 2020, roughly 164 billion tons of Antarctic ice melted per year, according to the National Aeronautics and Space Administration.
A common route is to voyage south from Argentina toward Antarctica before heading north up the coast of Africa — the same route taken by the cruise ship MV Hondius.
“The sites you will see in Antarctica are extremely unique and not replicable anywhere else on the planet — the whales, the seals, the penguins, the icebergs — it’s all really stunning and it makes a huge impression on people,” said Claire Christian, executive director of the environmental group Antarctic and Southern Ocean Coalition.
Photo: AP
EXPLOSIVE TOURISM GROWTH
In 2024, more than 80,000 tourists touched down on the vast ice-cloaked continent and 36,000 viewed from the safety of ships, according to data collected by the International Association of Antarctica Tour Operators.
The International Union of Concerned Scientists estimates that tourism to Antarctica has grown tenfold in the past 30 years.
Photo: AP
That number could rise further in the next decade as costs fall with more ice-capable hulls hitting the water and technological advances, said Hanne Nielsen, a senior lecturer of Antarctic law at the University of Tasmania. Her colleagues at the university estimate the annual figure could triple or quadruple to over 400,000 visits in that time.
Some tourists come to Antarctica for “last chance tourism,” knowing the melting landscape is rapidly.
RISKS OF CONTAMINATION
Officials have not indicated any evidence of contamination from the MV Hondius.
However, flocks of migratory birds brought avian flu from South America to Antarctica in recent years, according to the US Centers for Disease Control and Prevention.
That outbreak prompted the International Association of Antarctica Tour Operators and others to harden rules for tourists’ conduct and hygiene to protect visitors from being contaminated. To protect the fragile ecosystem from invasive species large and microscopic, visitors are told to stay away from animals and to avoid touching the ground with anything but their feet.
“There are rules that people are bound by when they’re heading south,” Nielsen said, describing her five voyages as a former guide. Crews and passengers use vacuums, disinfectants and brushes to scrub shoes and equipment clear of bugs, feathers, seeds and microbe-carrying dirt.
“Between the tongues and the laces of the boots you can find a lot of things,” she said.
Cruise ships have been struck by outbreaks of diseases like norovirus, which can spread quickly in a ship’s close quarters. In 2020, a COVID-19 outbreak on the Diamond Princess turned the cruise ship into an incubator for the then-mysterious virus.
Hantavirus usually spreads by inhaling contaminated rodent droppings.
ISLAND-HOPPING CRUISE
The WHO said Tuesday that MV Hondius left Ushuaia, Argentina, on April 1 and visited Antarctica and several isolated islands.
WHO is investigating possible human-to-human transmission on the cruise ship, said Dr. Maria Van Kerkhove, WHO’s director of epidemic and pandemic preparedness. Officials suspect the first infected person likely contracted the virus before boarding, she said, and officials have been told there are no rats on board.
Antarctica is governed by the Antarctic Treaty, which in 1959 enshrined the territory as a scientific preserve used only for peaceful purposes. A series of rules that followed “aim to ensure that all visits, regardless of location, do not adversely impact the Antarctic environment or its scientific and aesthetic values,” according to the treaty’s secretariat.
Companies and scientific ventures voluntarily comply with biosecurity guidelines and submit environmental impact assessments for Antarctic operations.
The treaty was written when tourism numbers were much lower, Christian said.
“Activity needs to be regulated appropriately, as you would with any of the world’s sensitive and precious ecological sites,” Christian said from Hiroshima, Japan, where she was preparing for an Antarctic Treaty Consultative Meeting. There she’ll join calls to strengthen protections for Antarctica’s penguins, whales, seabirds, seals and krill — tiny creatures at the base of the food chain.
For now, the lure of the frozen frontier continues to draw visitors.
“You can put a footprint in Antarctica and it’s still there 50 years later,” Christian said.
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