A Muslim faithful celebrates during the Eid al-Fitr festival, marking the end of the fasting month of Ramadan, in Kaduna, Nigeria on April 10, 2024. (Photo by Marvellous Durowaiye/Reuters)

Teachers, students and sympathizers take part in an anti-government protest in Budapest on March 15, 2023, to mark the 175th anniversary of the 1848-1849 Hungarian Civic Revolution and War of Independence. (Photo by Peter Kohalmi/AFP Photo)

Actress Elaine C Smith grazes Siusan, the Highland cow, on Glasgow Green to mark being given the Freedom of the City of Glasgow, UK on Thursday, March 6, 2025. (Photo by Jane Barlow/PA Wire)

British TV personality and actress Ekin-Su Cülcüloğlu, former Love Islander on February 23, 2024. Commissioned by Fabulous Magazine and shot by Mark Hayman. (Photo by News Group Newspapers Limited)

A pigeon sits on the cap of an Indonesian military personnel during a ceremony marking the country's 80th Independence Day, at the Presidential Palace in Jakarta, Indonesia, on August 17, 2025. (Photo by Ajeng Dinar Ulfiana/Reuters)

Contestants compete during their model physique competition to mark International Olympic Day at the Myanmar Convention Center in Yangon, Myanmar, Saturday, June 28, 2025. (Photo by Thein Zaw/AP Photo)

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)

In this photo made late Saturday, August 9, 2014, in Keelung, Taiwan, a traditional Chinese dance troupe performs during a parade marking the beginning of the Chinese folklore's mid-summer's Ghost Month Festival. Fourteen days into the seventh month of the lunar calendar, August 9, in 2014, marks the traditional Chinese Ghost Month where the gates of the underworld are opened and spirits of the deceased are set free to roam the world of the living. The month long festivities are aimed to please the roaming spirits. (Photo by Chiang Ying-ying/AP Photo)