British underwater photographer of the year – winner. Out of the Blue by Nick Blake (UK). Location: Yukatán peninsula, Kukulkan  Kukulkan, one of the spectacular cenotes on Mexico’s Yucatán peninsula, is noted for its otherworldy light as sunbeams penetrate the darkness of the cave. Blake captured this diver in the centre of one of the beams.

Underwater photographer of the year 2017 winners – in pictures

British Underwater Photographer of the Year 2017 - Out of the Blue Kukulkan Cenote on Mexico’s Yucatan Peninsula forms part of the Chac Mool system and is noted for the spectacular light effects as the sun penetrates the darkness-The Atlantic

Hidalgo, Mexico Houses on a hill are painted with vivid colours

Best photos of the day: colourful homes and a tired monk

Pachuca , Mexico Houses on a hill are painted with vivid colours in Hidalgo state as part of a government initiative that seeks to motivate young people living in high crime areas to participate and decorate their environment Photograph: Yuri Cortez

Contemporary issues– singles, first prize Leshia Evans stands her ground while offering her hands for arrest during a protest against police brutality in Louisiana, US

World Press Photo Contest 2017 – winning pictures

The sky looks on fire as the clouds glow red in a rowing lake in Nene Park in Peterborough, UK

Best photos of the day: Baby giraffes and Chinese lanterns

Peterborough, UK Clouds above a rowing lake in Nene Park Photograph: Paul Marriott/REX/ShutterstockThe sky looks on fire as the clouds glow red in a rowing lake in Nene Park in Peterborough, UK

Swaledale, North Yorkshire, UK A flock of sheep huddles together while snow spindrift is whipped up by strong winds

Best photos of the day: Maradona mural and Prince Charles's new glasses

The Guardian’s picture editors bring you a selection of photo highlights from around the world

Daily life - stories, first prizeA barber’s shop in Old Havana, Cuba

World Press Photo Contest 2017 – winning pictures

Daily life - stories, first prizeA barber’s shop in Old Havana, Cuba

Sieversdorf, Germany Trees cast shadows on a snowy landscape

Best photos of the day: Davos security and a Liverpool statue

Best photos of the day: Davos security and a Liverpool statue

Riot policeman fires teargas at opposition activists

The 20 photographs of the week

Riot policeman fires teargas at opposition activists

Johannesburg, South Africa: A rider paddles on the Emmarencia Dam as mist rises off the water

Best photos of the day: Saturn's moon and a man on wire

The Guardian’s picture editors bring you a selection of photo highlights from around the world (and beyond), including one of the Flying Frenchies above London and a close-up of Titan

light-rail train passes through a 19-storey residential building that also serves as a station in the Chongqing Rail Transit system in  China

Best photographs of the day: St Patrick's Day parade and Kolkata taxis

A light railway train passes through a residential building in Chongqing, China, via Reuters

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