Tom Cannon knew he was witnessing a rare natural phenomenon when he captured footage of whale sharks feeding on bait balls on Western Australia's Ningaloo Reef.
But the underwater ocean photographer never imagined the sheer scale of how that footage would travel across the world, and that it would be used by scientists to gain insight into the complex feeding behaviour of the largest fish species on earth.
"It was probably the most exciting experience I've ever had in my life," Mr Cannon recalls, of the moment he captured the footage in March 2020.
