In this handout photograph received from Sumukha J.N on December 15, 2016, the newly-discovered spider Eriovixia Gryffindori sits on a leaf in the Kans in India's Western Ghats. (Photo by Sumukha J.N./AFP Photo)

The fourth annual BigPicture Natural World Photography Competition aims to celebrate the diversity of life on Earth, and encourages people to protect and conserve it. Here: “The Salmon Catchers”. Terrestrial Wildlife. To capture this view of a mother grizzly bear and her cub, photographer Peter Mather set up a camera trap on a log that he knew the bears tended to traverse while fishing for salmon, in the Yukon River watershed in Canada. (Photo by Peter Mather/BigPicture Natural World Photography Competition 2017)

A flash of lightning lights up a raincloud hovering over a township in Dharmsala, India, Sunday, April 19, 2020. (Photo by Ashwini Bhatia/AP Photo)

In this Saturday, March 3, 2018, photo, a contestant gets ready to throw a hatchet at a wooden bull's-eye at the Kick Axe Throwing venue in the Brooklyn borough of New York. Kick Axe Throwing is the first bar in New York City to pick up on a nationwide trend of ax throwing, a growing sport that some enthusiasts hope will take off the way bowling did in the last century. (Photo by Mary Altaffer/AP Photo)

Revelers participate in J'Ouvert, an overnight celebration the night before the West Indies Day Parade in Brooklyn, NY on September 3, 2018. Violence in past years led NYPD to shut down the parade route until 2am. (Photo by Stephen Yang)

EMT Christian Amoroso, wearing personal protective equipment (PPE), pauses while unloading COVID-19 patients at the Montefiore Medical Center Wakefield Campus on April 06, 2020 in the Bronx borough of New York City. A specialized bus known as a Medical Evacuation Transport Unit (METU), caries infected patients on stretchers and benches between hospitals. (Photo by John Moore/Getty Images)

A reveller daubed in “Gulal” or coloured powder celebrates Holi, the Hindu spring festival of colours in Bhopal on March 6, 2023. (Photo by Gagan Nayar/AFP Photo)

People dressed as mermaids and mermen take part in the group swim during the MerMagic Convention at the Freedom Aquatic & Fitness Center in Manassas, Virginia on March 4, 2023. The event bills itself as the “World's Largest Mermaid Convention”. (Photo by Joseph Prezioso/AFP Photo)