An Indian artist gives the finishing touches to a figure of the elephant-headed Hindu god Ganesha at a workshop ahead of the Ganesh Chaturthi festival in New Delhi on September 15, 2015. The idol is meant for the forthcoming festival Ganesha Chaturthi, a ten-day long event which is celebrated all over India. During the Ganpati festival, that is celebrated as the birthday of Lord Ganesha, idols of the Hindu deity are worshipped at hundreds of pandals or makeshift tents before they are immersed into water bodies. This year, the festival starts on 17 September 2015. (Photo by Sajjad Hussain/AFP 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)

Wrestler known as Gio Malkriado (top) fights with a fluorescent tube with wrestler Ciclope during an extreme wrestling fight at a temporary wrestling ring inside a car wash in Tulancingo Hidalgo, Mexico October 8, 2016. When the time comes for the so-called Extreme Star Fight, six wrestlers climb into the ring. Once the fighting begins, anything goes. They bash each other with chairs and long neon lights, causing small explosions and scattering tiny pieces of glass everywhere. (Photo by Carlos Jasso/Reuters)

Mohammed El-Dahshan, 38-year-old “Mesaharati”, or dawn caller, accompanies his donkey wrapped with colored led lights to wake Muslims up for a meal before sunrise, during the Islamic holy month of Ramadan, in the Delta city of Dikernis, about 93 miles (150 km) North of Cairo, Egypt early Wednesday, April 12, 2023. Each night, El-Dahshan, sets out after midnight with his donkey banging his drum, chanting traditional religious phrases and calling out on residents by name to wake them in time for the vital pre-dawn meal known as “Suhour”. (Photo by Amr Nabil/AP Photo)

A Nepalese army solder stand next to a horse during the “Ghodejatra” Horse Race festival, which is organised by the Nepal Army, in Kathmandu, Nepal, April 7, 2016. Ghode Jatra, the horse racing festival of Nepal, celebrated on the New Moon day of mid March or early April is among the important celebrations of the Kathmandu Valley. Grand horse parade including various acrobatic style of shows are performed by Nepal military at Tundikhel-a fenced parade ground located in the heart of Kathmandu city. (Photo by Navesh Chitrakar/Reuters)

Revellers perform during the “Salsodromo”, the kick-off of the music and cultural festival Feria de Cali (Cali Fair) in Cali, Colombia, on December 25, 2021. The “Salsodromo”, an event in which more than 2,500 revellers and salsa music dancers perform along a kilometre-long stripe, marks the start of the Feria de Cali festival every year. (Photo by Paola Mafla/AFP Photo)

People walk past the sculpture by artist Danger Dave titled “Damien Hirst looking for sharks” at the Swell Sculpture Festival at Currumbin Beach on the Gold Coast, Australia, 17 September 2021. The Swell Sculpture Festival is the largest outdoor art exhibition in Queensland and features 65 large scale contemporary sculptures set along Currumbin Beach. (Photo by Darren England/EPA/EFE)

A young girl sits on a mat, as worshippers arrive to pray to mark the Muslim Eid-al-Adha (Festival of Sacrifices) without observationg precautionary measures to curb the spread of COVID-19, in Kara, Ogun State in southwest Nigeria, on July 31, 2020. Nigerian Muslim faithfuls joined their counterparts across the world to celebrate Eid-El-Adha, Islamic festival of sacrifice. (Photo by Pius Utomi Ekpei/AFP Photo)