A tale of two foxes. Surprising behaviour, witnessed in Wapusk national park, on Hudson Bay, Canada, in early winter. Red foxes don’t actively hunt Arctic foxes, but where the ranges of two predators overlap, there can be conflict. Though the light was poor, the snow-covered tundra provided the backdrop for the moment that the red fox paused with the smaller fox in its mouth in a grim pose. (Photo by Don Gutoski/2015 Wildlife Photographer of the Year)

Portrait category, bronze award winner. Purple-crested Turaco Gallirex porphyreolophus. Lower Mpushini, near Pietermaritzburg, KwaZulu-Natal, South Africa. (Photo by Richard Flack/Bird Photographer of the Year 2022)

The winners in the third annual drone photography awards have been announced. Organised by the social network Dronestagram, the competition attracted more than 6,000 entries from amateur and professional drone enthusiasts across the world. Here: First place in the travel category went to the Basilica of Saint Francis of Assisi in Italy. (Photo by Francesco Cattuto)

Shooting star by Tony Wu, US/Japan. Winner, underwater. The electrifying reproductive dance of a giant sea star. As the surrounding water filled with sperm and eggs from spawning sea stars, Wu faced several challenges. Stuck in a small, enclosed bay with only a macro lens for photographing small subjects, he backed up to squeeze the undulating sea star into his field of view. The dancing posture of spawning sea stars rising and swaying may help release eggs and sperm, or may help sweep the eggs and sperm into the currents where they fertilise together in the water. Kinko Bay, Japan. (Photo by Tony Wu/Wildlife 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)