The 26th annual National Geographic Traveler Photo Contest is now accepting submissions. Official categories include: “Travel Portraits”, “Outdoor Scenes”, “Sense of Place” and “Spontaneous Moments”. The contest is accepting entries until June 30. Photo: “Forest lights”. Aurora Borealis over the forest of the Pyhae Luosto National Park, Finland. (Photo and caption by Nicholas Roemmelt/National Geographic Traveler Photo Contest)

Contrasted against the white flowers in a cotton field, a brown bear is out for a ramble just after midnight in the second decade of July 2023 in Kainuu, Finland, where the sun does not fully set for more than 70 days in the summer months. (Photo by Jane Jeffrey/Animal News Agency)

An aerial view of Lake Salt as teams conduct salt extraction works at lake which is a significant portion of Turkiye's salt need is met in Ankara, Turkiye on August 11, 2022. Salt extraction works lasts for about 3 months and continues with the recession of the waters in Lake Salt. The salt extracted from the lake, where salt is produced with a purity of 99 percent, is sent to more than 60 countries. (Photo by Emin Sansar/Anadolu Agency via Getty Images)

Picture made available by “All About Lapland” on March 24, 2023 and taken on on late March 23, 2023 shows colourful northern lights (Aurora borealis) appearing around the Arctic Circle near Rovaniemi, Finland. The northern lights appeared right after dawn, and they continued all the way through the night. (Photo by Alexander Kuznetsov/All About Lapland/AFP Photo)

Czech fishermen sort fish during the traditional Carp haul at Lake of Dvoriste near Smrzov village, Czech Republic, 02 November 2015. Carp, the traditional Czech Christmas Eve dinner, is harvested primarly from the region of southern Bohemian lakes. (Photo by Filip Singer/EPA)

A worker lays rails across the bed of a drained area of a lake used for the production of salt at the Sasyk-Sivash lake near the city of Yevpatoria in Crimea, October 5, 2014. The area has a long tradition of salt production, prepared from salt flats flooded with water from the Black Sea. (Photo by Pavel Rebrov/Reuters)

In this aerial view fishing boats are seen on the shore of the Lake Malawi at the Senga village on May 20, 2019 in Senga, Malawi. Hundreds of local traders gather each morning and afternoon at Senga, but fish populations are falling in Lake Malawi, Africa's third largest body of freshwater. (Photo by Gianluigi Guercia/AFP Photo)

A swimmer disguised as Superman dives into the lake during the 78th “Coupe de Noel” (Christmas cup) swimming race in the Lake Geneva, on December 18, 2016 in Geneva. More than 1800 participants took part in the event, a 12-meter-long swimming off the Geneva's bank in the 7 degrees Celsius cold water. (Photo by Fabrice Coffrini/AFP Photo)