October winner. “A burst of the aurora borealis over Kirkjufell, taken in September 2016. This shot has been a holy grail for me and was finally captured after many trips”. MICK RYAN, JUDGE: Iceland is a hotspot for aurora photography and this composition of the symmetric, free-standing Kirkjufell and the trident waterfall is much-sought after. If you can time your visit when the aurora “kp” index is high and know the settings for nighttime aurora images, you may end up with a beautiful photograph like this. (Photo by DВ/The Guardian)

British underwater photographer of the year 2021, British waters wide angle category winner and My Backyard category winner. While You Sleep by Mark Kirkland (United Kingdom), common frog taken in Malls Mire, Glasgow, Scotland. (Photo by Mark Kirkland/Underwater Photographer of the Year 2021)

Underwater photographer of the year 2020 and wide angle category winner: Frozen Mobile Home by Greg Lecoeur (France) in the Antarctic peninsula, Antarctica. Crabeater seals swim around an iceberg. These massive and mysterious habitats are dynamic kingdoms that support marine life. As they swing and rotate slowly through polar currents, icebergs fertilise the oceans by carrying nutrients from land that spark blooms of phytoplankton, fundamental to the carbon cycle. (Photo by Greg Lecoeur/Underwater Photographer of the Year 2020)

“People of the River”. This is a Karo tribe family; father, mother, two sisters and two brothers. The tribe, who live along the Omo River in east Africa, incorporate rich symbolism into their rituals by using ornate body art, headdresses and body scarification to express beauty and significance. (Photo by Jatenipat Ketpradit/International Portrait Photographer of the Year)

Grand title winner: Environmental photographer of the year. The Bitter Death Of Birds by Mehdi Mohebi Pour. This photo shows the efforts of the environmental forces to collect the bodies and prevent the spread of this disease. The Miankaleh wetland is being destroyed by changes in the climate and it is my duty as a photographer to highlight these problems and create a record for history. I want to prevent the complete destruction of the wetland and the potential environmental disaster by showing the issues and threats to these beautiful natural places. (Photo by Mehdi Mohebi Pour/Environmental Photographer of the Year)

Single Sports Second Prize. Garrett Gerloff (31) and Sandro Cortese (11) crash in the World Superbike warm-up during the World Championship on Phillip Island, Australia. (Photo by Scott Barbour/AAP Photo/Istanbul Photo Awards 2021)

A cave diver in Anhumas Abyss, Bonito, Brazil. (Photo by Marcio Cabral/Epson International Pano Awards 2018)

The British and Irish Association of Zoos and Aquariums (BIAZA) has announced the winning images in its annual photography competition. The 2020 winners show the important work of zoos and aquariums at an immensely challenging time. After months of closures, these conservation organisations are reeling from the financial impacts of the coronavirus pandemic. Here: Runner-up, Heart and Minds: Nifty nose, by Samantha Allworthy at Longleat. Species: prehensile tailed porcupines. (Photo by Samantha Allworthy/BIAZA 2020 Photography Competition)