Artists perform during the opening show directed by German director Volker Hesse, on the opening day of the Gotthard rail tunnel, at the fairground Rynaecht at the northern portal in Erstfeld, Switzerland, Wednesday, June 1, 2016. The construction of the 57 kilometer long tunnel began in 1999, the breakthrough was in 2010. After the official opening on June 1, the commercial operation will start in December 2016. (Photo by Ruben Sprich\Pool Photo via AP Photo)

Muslim pilgrims pray around the holy Kaaba at the Grand Mosque, during the annual haj pilgrimage in Mecca September 30, 2014. (Photo by Muhammad Hamed/Reuters)

Actress and model Rosie Huntington-Whiteley during an evening out and about in London, England on January 23, 2020. (Photo by Stephen Coke/Rex Features/Shutterstock)

Alex Sun, left, Peter Simplicio and Matt Connelly jump through a hole in the ice into Lake Andrews on the Bates College campus, Friday, February 9, 2024, in Lewiston, Maine. The annual Bates College Puddle jump started 50 years ago as a Winter Carnival tradition. (Photo by Andree Kehn/AP Photo)

Charli XCX arrives for the 30th Annual ARIA Awards 2016 at The Star on November 23, 2016 in Sydney, Australia. (Photo by Brendon Thorne/Getty Images)

Two working girls entertaining themselves in the absence of customers at the Moonlite Bunny Ranch, a legal brothel owned by Dennis Hof, in Lyon County, one of the fews counties in the USA which permits legalized prostitution. (Photo by Stephan Gladieu/Getty Images)

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)

An exhibition staff member looks over artworks by Polish artist Magdalena Abakanowicz on display during a preview of the exhibition “Magdalena Abakanowicz: Every Tangle of Thread and Rope” at the Tate Modern in London, Britain, 15 November 2022. The large-scale Abakan sculptures have been brought together for the first time in the UK. The exhibit opens on 17 November 2022 and runs until 21 May 2023. (Photo by Andy Rain/EPA/EFE/Rex Features/Shutterstock)