A squid in the Red Sea. Underwater photographer Andrey Nekrasov, 42, photographed bigfin reef squid in the pitch black Red Sea putting on an extraordinary light show when the sun goes down. (Photo by Andrey Nekrasov/Medavia/ABACAPress)

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)

A man wearing an illuminated atmospheric diving suit as part of an installation titled “What Lies Beneath” looks at members of the public during the Vivid Sydney festival of light and sound in Sydney, Australia, May 26, 2017. (Photo by Steven Saphore/Reuters)

An adult helps a young girl light a cigarette as a band plays in the background in the village of Vale de Salgueiro, northern Portugal, during the local Kings' Feast Friday, January 5, 2018. The village's Epiphany celebrations, called Kings' Feast, feature a tradition that each year causes an outcry among outsiders: parents encourage their children, some as young as 5, to smoke cigarettes. (Photo by Armando Franca/AP Photo)

In this photo taken on April 14, 2022, people visit the Light Festival to celebrate the 110th birth anniversary of late North Korean leader Kim Il Sung at Kim Il Sung Square in Pyongyang. (Photo by Kim Won Jin/AFP Photo)

Hindu devotees sit for prayer with burning incense and light oil lamps during the Rakher Upobash, a religious fasting festival, at a temple in Narayanganj district on the outskirts of Bangladeshi capital Dhaka, on November 7, 2020. (Photo by Xinhua News Agency/Rex Features/Shutterstock)

An actor performs as a zombie during the “Train to Apocalypse” event at a Light Rail Transit (LRT) train station in Jakarta, Indonesia, 09 September 2022. The Indonesian capital's LRT operator modified train cars and stations into zombie apocalypse settings to promote the use of public transportations. (Photo by Mast Irham/EPA/EFE/Rex Features/Shutterstock)

Vendors warm themselves as they light a bonfire at a market during a nationwide power outage, in Muzaffarabad on January 23, 2023. A massive power breakdown in Pakistan on January 23 affected most of the country's more than 220 million people, including in the mega cities of Karachi and Lahore. (Photo by Sajjad Qayyum/AFP Photo)