Poplar trees, the Pope and paddling: Photos of the week

Justin Tallis/PA Media Queen Camilla, wearing a black dress, smiles as she meets Gladiators Nitro and Fire, who are dressed in their gladiator outfits and smiling back at her, in a grand room of Buckingham Palace Justin Tallis/PA Media

Queen Camilla meets Gladiators Nitro aka Harry Aikines-Aryeetey and Fire aka Montell Douglas, at a reception to celebrate the final of BBC's creative writing competition 500 Words, at Buckingham Palace, London.

Andre Coelho/EPA-EFE People sitting or standing on paddle boards in the ocean with the sun shining overhead in a bright yellow sky Andre Coelho/EPA-EFE

People paddle in the sea at Copacabana Beach, in Rio de Janeiro, Brazil.

Dylan Martinez/Reuters A group of nuns wearing white veils are seen from behind as they pray in front of a statue of Pope John Paul II Dylan Martinez/Reuters

Nuns pray in front of the statue of late Pope John Paul II outside Gemelli Hospital, where Pope Francis continues his treatment for pneumonia, in Rome, Italy.

Adam Vaughan/EPA-EFE A picture taken with a drone shows shadows being cast in the evening sun by a line of poplar trees Adam Vaughan/EPA-EFE

Poplar trees next to Sefton Park Allotments in Liverpool cast long shadows in the evening sun.

Mike Blake/Reuters Conan O'Brien, wearing glasses and a suit, pushes a huge roll of red carpet out as a big crowd of photographers takes his picture Mike Blake/Reuters

Academy Awards host Conan O'Brien pushes the rolled red carpet during its rollout for the 97th Academy Awards in Los Angeles, California.

Chaideer Mahyuddin/AFP A very small black turtle with white stripes swims on its own through crystal clear waters Chaideer Mahyuddin/AFP

A leatherback sea turtle hatchling swims away after its release at Lhoknga beach in Indonesia's Aceh province.

Ida Marie Odgaard/Ritzau Scanpix/AFP

Michelangelo's David is moved into the National Gallery of Denmark in Copenhagen for an exhibition about the sculptor's life.

Carl Court/Pool/Reuters Sir Keir Starmer hands an envelope to Donald Trump, who is talking. They are sitting in yellow chairs and both wearing suits. Carl Court/Pool/Reuters

During a visit to the White House, Prime Minister Sir Keir Starmer presents US President Donald Trump with an invitation from King Charles III for a second state visit to the UK.

Lisa Leutner/Reuters Couples wearing formal attire dance and clap in a grand ballroom. There is a couple in the centre of the image dancing together while others crowd around and watch while clapping Lisa Leutner/Reuters

Couples dance during the opening ceremony of the traditional Opera Ball in Vienna, Austria.

Ina Fassbender/AFP Women dressed in green outfits, pink and white face paint, and pink flowers in their hair, cheer in front of Cologne Cathedral while throwing confetti in the air Ina Fassbender/AFP