Underwater Photographer of the Year celebrates photography beneath the surface of the ocean, lakes and rivers.
More than 5,500 underwater pictures were entered in 13 categories by underwater photographers from 70 countries around the world.
Image copyright Greg Lecoeur 
Image copyright Anita Kainrath 
Image copyright Pasquale Vassallo 
Image copyright Nick More 
Image copyright Nur Tucker 
Image copyright Zena Holloway 
Image copyright Renee Capozzola 
Image copyright Keigo Kawamura 
Image copyright Trevor Rees 
Image copyright Shane Keena All images are copyright of the photographers as marked
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