MotoGP Ducati Lenovo Team rider Marc Marquez (R) of Spain and his girlfriend Gemma Pinto (L) celebrate his World Champion 2025 title after the race at the Motorcycling Grand Prix of Japan in Motegi, Tochigi Prefecture, northeastern Japan, 28 September 2025. (Photo by Franck Robichon/EPA)

Hawk T1 aircraft of the Royal Air Force Aerobatic Team, the Red Arrows, perform a vertical loop during a practice display in Fitties, Greece on November 10, 2025. The team conducted the display practice as part of Exercise SpringHawk 2025. (Photo by AS1 Iwan Lewis/RAF)

Canadian singer-songwriter and dancer Tate McRae performs with dancers during the first day of the iHeartRadio Music Festival at T-Mobile Arena in Las Vegas, Nevada, U.S. September 19, 2025. (Photo by Steve Marcus/Reuters)

A curious cat ipeeks out of a bag carried by its owner on a tour of the Cat Expo 2022 in Kuala Lumpur, Malaysia, 30 September 2022. The “Ekspo Kucing”, described as Malaysia's Largest Cat Expo runs from 30 September to 02 October 2022 at the Matrade Exhibition and Convention Centre (MECC) in Kuala Lumpur and “will also feature other variety of pets such as rabbits, hamsters, guinea pigs, reptiles and exotic animals”, the MECC said on its website, along with other highlight events such as a Federation Internationale Feline (FIFe) Cat Competition, Cat Adoptions or a “Sugar Glinder Contest”. (Photo by Fazry Ismail/EPA/EFE/Rex Features/Shutterstock)

Tom Nevins guts a feral pig sow during hunting on Silver Plains Station on October 8, 2011 outside of Coen, Australia. Feral pigs are recognised as environmental and agricultural pests reported to have a population of up to 23.5 million over around half of Australia. The Cooktown Hog Hunt is held annually with this year's hunting window open from registration at 2pm on Friday to the end of weigh in at 2pm on Sunday afternoon. (Photo by Mark Kolbe/Getty Images)

A cenote is a natural phenomenon, a sinkhole in the Earth’s surface. The Yucatan Peninsula in Mexico has an estimated 7,000 cenotes because it is primarily made up of porous limestone. For millions of years, rainfall slowly ate away at the limestone and a huge system of underground caves and caverns was formed. Many filled with water from rain or from the underground water table. When the roof of a water filled cave collapses, a cenote is born. The water found in a cenote may be fresh water, salt water, or both. Structurally it may be completely open, like a lake, almost completely closed with just a small opening at the top, or somewhere in between.

On the second straight day of record-setting temperatures, Maddy Hacker is hoisted up by friend Jasmine Harper, both of McLean, Virgnia, as they attempt an acrobatic stunt in front of the U.S. Capitol in Washington, U.S., February 21, 2018. (Photo by Kevin Lamarque/Reuters)