Underwater photographer of the year 2018 winners – in pictures

German photographer Tobias Friedrich has been named this year’s winner for his ‘perfectly lit and composed’ panorama of a wreck off the coast of Egypt, while British winner Grant Thomas captured a couple of affectionate swans

Underwater photographer of the year 2017 winners – in pictures

French photographer Gabriel Barathieu has been named this year’s winner for his ‘balletic, malevolent’ dancing octopus, while British winner Nick Blake captured a lone diver among the otherworldly sunbeams of a Mexican cave