A snowmobile parked at Lake Kilpisjärvi during a Polar Scientific Diving class in Kilpisjärvi, Finland, March 15, 2026. (AP Photo/Kostya Manenkov)

Caroline Chen, a scientific diver and research assistant, smiles before diving during a Polar Scientific Diving class in Kilpisjärvi, Finland, Finland, March 15, 2026. (AP Photo/Kostya Manenkov)

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 Kilpisjärvi, Finland, March 4, 2025. (Pata Degerman via AP)

In this photo provided by Pata Degerman, a diver swims under the ice during a Polar Scientific Diving class in Kilpisjärvi, Finland, March 13, 2024. (Pata Degerman via AP)

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 Kilpisjärvi, March 15, 2026. (AP Photo/Kostya Manenkov)

People gather as Druze prisoners arrive by buses after their release in a prisoner exchange between Syrian government forces and Druze militiamen in Sweida province, Syria, Thursday, Feb. 26, 2026. (AP Photo/Fahd Kiwan)

FILE - An area near the Na Pali Coast on the island of Kauai in Hawaii is seen from the air on Dec. 17, 2019. (AP Photo/Maryclaire Dale, File)

Brazil's Foreign Minister Mauro Vieira, left, and U.S. Secretary of State Marco Rubio talk during the G7 Foreign Ministers' meeting with partner countries in Cernay-la-Ville outside Paris, France, Friday, March 27, 2026. (AP Photo/Michel Euler)