Clark's first interest in photography evolved in 1975 while working for a whitewater rafting company on rivers throughout the western United States. He has traveled all over the world compiling a library of film and digital images both on land and above and below the surface of the world’s oceans. Wide-angle underwater photography is the primary focus of AquaTerra Imagery.
Clark has won awards for his work at BBC Photographer of the Year, Beneath the Sea, the Monterey Shootout, The Northern California Underwater Photographic Society Beach Dive Photo Competition and International Photo competition, the Bonaire Shootout, the Los Angeles Underwater Photographic Society International Underwater Photographic Competition, and has been published in Sport Fishing Magazine and Lonely Planet.
He co-authored Sol Wara, a book of underwater photography along with Adriana Basques.
Clark shoots with a Canon 7D in a Nauticam housing using four strobes with custom dome diffusers for special effects.