Mok is a multi-award-winning photographer who specialises in underwater photography. He has been placed in many photography competitions, such as Underwater Photographer of the Year, Ocean Geographic Pictures of the Year, Sony World Photography Award and Our World Underwater, with his most notable accolade being the Master of Ocean Geographic Competition Wyland Award. His images have appeared in NatGeo online, Ocean Geographic, with a special feature of "OGX Emerging Pro Wildlife Photographer". In 2024, Mok was named Singapore Underwater Photographer of the Year.