Freediving: exploring the ocean on a single breath – in pictures

'Magical, mystical, zen-like …' is how Australian freediver Christina Saenz de Santamaria describes the experience of diving to depths of up to 82m on a single breath. When she's not exploring the vivid blue waters of Mexico's cenotes or Hawaii's wildlife rich seas, Saenz de Santamaria runs a freediving school in Thailand, with her husband Eusebio. To see more of their incredible photographs visit their website oneoceanonebreath.com

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Photographs: Eusebio Saenz de Santamaria, Christina Saenz de Santamaria