Couple getting intimate on couch. (Photo by Vincent Besnault/Getty Images)

A woman poses for a picture during Lunar New Year's Eve on Yaowarat Road in Bangkok's Chinatown, Thailand, February 9, 2024. (Photo by Jorge Silva/Reuters)

Penitents wearing masks, known locally as “Morions” take a selfie during the start of Holy Week celebrations in Mogpog, Marinduque in central Philippines March 21, 2016. The Moriones is an annual festival held on Holy Week on the island of Marinduque, Philippines. The “Moriones” are men and women in costumes and masks replicating the garb of biblical Roman soldiers as interpreted by local folks. (Photo by Erik De Castro/Reuters)

Robots serve trays with food to customers waiting at the Robot theme restaurant in Bangalore, India, 17 August 2019. Six robots are deployed as waiters at the the robot-themed Robot restaurant where each table is equipped with a tablet to place one's order. (Photo by Jagadeesh N.V./EPA/EFE)

British-Albanian singer Dua Lipa (left) and American model Emily Ratajkowski goof around at a Puma event in Milan, Italy in the second decade of December 2024. (Photo by Instagram)

This photograph taken on January 30, 2025 shows a labourer looking into a Hindustan Ambassador yellow taxi, transporting fish at a wholesale market in Kolkata. Kolkata cherishes its past, which is why the one-time Indian capital is mourning a vanishing emblem of its faded grandeur: a hulking and noisy fleet of stately yellow taxis. (Photo by Dibyangshu Sarkar/AFP Photo)

Burlesque dancer and Lucha VaVoom co-founder Rita D'Albert gets dressed before the Lucha VaVoom “Night of the Vampire” performance in Los Angeles, California October 29, 2014. (Photo by Patrick T. Fallon/Reuters)

With its huge eyes, comical name and diminutive size, Mark R. Smith’s image of a baby Hawaiian bobtail squid can’t help but raise a smile. A curiously endearing creature, the cephalopod is just 1.5cm across, its mantle cavity bearing more than a passing resemblance to a rather natty shower cap. But it is also a beautiful example of symbiosis – nature’s version of “I’ll scratch your back if you scratch mine” – for on the underside of the squid is a light organ which houses bioluminescent bacteria. The squid offers the bacteria protection and food, while the bacteria emit a glow – a handy trait that the squid uses to offset its silhouette, helping it to evade predators in the depths below. Mark R. Smith’s entry combines several images of a Hawaiian bobtail squid with different focus lengths to create a final picture with greater depth of field than normal. (Photo by Mark R. Smith/Wellcome Images/Macroscopic Solutions)