British underwater photographer of the year – winner. Out of the Blue by Nick Blake (UK). Location: Yukatán peninsula, Kukulkan
Photo: Nick Blake/UPY2017
Up-and-coming underwater photographer of the year – winner. Oceanic in the Sky by Horacio Martinez (Argentina). Location: the Red Sea
Photo: Horacio Martinez/UPY2017
Wrecks category – highly commended. The Haunted Room by Nadya Kulagina (Kazakhstan). Location: the Red Sea
Photo: Nadya Kulagina/UPY2017
Underwater photographer of the year – winner. Dancing Octopus by Gabriel Barathieu (France). Location: Island of Mayotte, off the coast of south-east Africa
Photo: Gabriel Barathieu/UPY2017
Most promising underwater photographer of the year – winner. Orca Pod by Nicholai Georgiou (UK). Location: Tromsø, Norway
Photo: Nicholai Georgiou/UPY2017
Wide-angle category – highly commended. Frozen Hunting by Fabrice Guerin (France). Location: Andenes, Norway
Photo: Fabrice Guerin/UPY2017
Macro category – commended. Larval Lionfish by Steven Kovacs (USA). Location: Palm Beach, Florida
Photo: Ximena/Steven Kovacks/UPY2017
Behaviour category – winner. Your Home and My Home by Qing Lin (Canada)
Photo: Qing Lin/UPY2017
Behaviour category – highly commended. Dolphins Hunting by Greg Lecoeur (France). Location: Port Saint Johns, South Africa
Photo: Gre Lecoeur/UPY2017
Behaviour category – commended. The Contenders by Simone Caprodossi (UAE). Location: Bahia Magdalena, Mexico
Photo: Simone Caprodossi/UPY2017