Karthik is an amateur wildlife photographer. His photographs have been widely published. He has also authored The Fauna of Bangalore, Avenue Trees and Ideas for Outdoors. His writings have been published in various national and international journals and periodicals. He has been educating the young and the old alike on aspects of natural history, and is an awardee of the Carl Zeiss Wildlife Conservation Award. Prior to joining Jungle Lodges and Resorts Ltd. as their Chief Naturalist, he has worked with WWF-India for over a decade.