Scientists are learning to dive beneath polar ice and study the study the flora and fauna below.
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In this photo provided by Pata Degerman, a diver swims under the ice during a Polar Scientific Diving class in Kilpisjrvi, Finland, March 13, 2024. In this photo provided by Pata Degerman, participants in a Polar Scientific Diving class look into an ice hole as a diver descends beneath the surface in Kilpisjrvi, Finland, March 4, 2025. Caroline Chen, a scientific diver and research assistant, smiles before diving during a Polar Scientific Diving class in Kilpisjrvi, Finland, Finland, March 15, 2026. A snowmobile parked at Lake Kilpisjrvi during a Polar Scientific Diving class in Kilpisjrvi, Finland, March 15, 2026. Ruari Buijs, a marine biology and oceanography student, right, and Caroline Chen, a scientific diver and research assistant, prepare to dive during a Polar Scientific Diving class in Kilpisjrvi, March 15, 2026. – KILPISJÄAs bubbles rippled across the frigid Finnish lake, diver Daan Jacobs emerged from a hole carved out of the thick, crackling ice.But Jacobs, a biodiversity adviser in the Netherlands, is one of a growing number of fortunate underwater explorers.earlier this month, a program designed by the Finnish Scientific Diving Academy to train the next generation of scientists and researchers to dive beneathsmaller, weaker and hungrier, because they rely on the sea ice to hunt from, higher temperatures at the North Pole spell disaster for the entire globe. In Antarctica, meanwhile, global warming is leading to melting of ice sheets, prompting sea level rise and disrupting ocean ecosystems.— and Antarctic — ice, and determine how climate change is affecting the plants and animals that have traditionally survived along the seafloor with little to no sunlight. But carrying out such research requires specialized scuba diving skills plus the proper scientific background — qualifications that experts say only a few hundred people in the world currently have. The Finnish Scientific Diving Academy’s class aims to not only train more divers, but also to convince the world that the polar ice crisis requires additional research. “Because it is melting so fast, we need to have more people deployed there — more science to be done — to understand better what happens,” said Erik Wurz, a marine biologist and one of the class's scientific diving instructors. “We have to do more and we need to be fast to save this unique ecosystem in the Arctic, but also the Antarctic.” And in a world that’s increasingly outsourcing work to artificial intelligence and robots, British Antarctic Survey marine biologist Simon Morley said that human hands are still necessary for this. Dragging nets across the seafloor would destroy the habitat, and a remotely operated submersible or robot can usually only pick up one specimen at a time. “A diver can go down and pick up 12 urchins, put them in a bag and not affect the rest of the system,” said Morley, who isn't part of the course.During each 10-day session, the academy's instructors drill a dozen experienced divers on a frozen lake at the University of Helsinki's Kilpisjärvi Biological Station. The program began in 2024 and the demand has allowed them to add a second session per year. The participants range from marine and freshwater biologists and other scientists to highly skilled recreational divers and documentary filmmakers. Ruari Buijs, a marine biology and oceanography student at the University of Plymouth in England, ultimately wants to work in Antarctica and research marine megafauna. He enrolled in this month's polar diving class in an effort to be more employable upon graduation.Meanwhile, Caroline Chen, a scientific diver and research assistant in Germany, said it’s her dream to dive in the polar regions. She believes that her experience in this course will help her design future experiments in such challenging conditions. The students must learn more than just diving under ice that's nearly a meter thick and into water temperatures that hover just above freezing. For starters, there's the frigid air temperatures and whipping winds over Lake Kilpisjärvi. That challenges the topside support team, which must operate equipment to keep the diver safe while fending off their own risk of frostbite. They also have to learn how to become safety divers in case of an emergency, like if the primary diver can't find the hole in the ice to surface after 45 minutes below. But once they're underwater, the divers say it's an incredible experience. During this month's session, the group dived beneath ice roughly 80 centimeters thick. Chen spotted some fish along the sea floor and then took a moment to look to the surface as sunlight streamed through the ice, seemingly mimicking another Arctic phenomenon. “It looks insane from the bottom up,” Chen said. “It changes all the time, like the Northern Lights.” Buijs said that the cold doesn't affect the covered parts of a diver's body. But the area around their mouth remains exposed underwater. “I think the worst thing is like your lips feel very numb afterward and they like stick out a lot,” he said, laughing. “You kind of get Botox lips a little bit.”The Associated Press’ climate and environmental coverage receives financial support from multiple private foundations. The AP is solely responsible for all content. Find theCopyright 2026 The Associated Press. All rights reserved. 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