King Charles has joined forces with David Attenborough in a surprise central London outing.
The King, 76, met the British broadcaster and biologist upon his arrival at the World Premier "Ocean with David Attenborough".
The premiere took place at the Royal Festival Hall in London.
King Charles wore a black bow tie and suit on the blue carpet, taking the place of the traditional red carpet to keep with the theme.
David Attenborough and King Charles pictured together at the premiere
PA
Other famous attendees at the premiere included Felicity Jones, Geri Halliwell-Horner, and Cara Delevingne.
The film, which is set to debut in cinemas before streaming on Disney+, focuses on sharing “the story of how we can, and must, restore the glory of Earth’s vast, interconnected waters,” according to a press release.
King Charles is a longtime champion of sustainability, including protecting nature and the oceans.
On February 19, 1970, he marked the "growing menace" of oil and plastic pollution in the sea during a speech at the "Countryside In 1970" conference.
David Attenborough and King Charles at the movie premiere
PA
Earlier in the day, King Charles held private audiences at Buckingham Palace with Governor-General of Canada Mary Simon.
He also met with Ecuador's President Daniel Noboa and First Lady Angela Lavinia Valbonesi Acosta.
Queen Camilla did not join her husband for the film premiere, but she was busy with royal duties of her own.
The Queen, 77, joined five-year-old Harrison Machin at the Tower of London for a VE Day event.
King Charles III (left) shakes hands with actor Theo James as he attends the premiere of 'Ocean with David Attenborough'
PA
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King Charles looked very suave at the premiere
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The royal couple were together earlier in the day, as they celebrated the second anniversary of their coronation.
Charles and Camilla unveiled new royal portraits at the Central Hall of the National Gallery in London.
Each portrait featured significant details about their ascension to the throne.
