Casson Trenor is an American environmentalist, author, entrepreneur, and media personality. He is the author of a number of books on environmentalism and sustainable seafood, in particular , a children's book, and , a reference guide. Trenor and two co-founders created the world's first sustainable sushi restaurant in 2009, as well as the acclaimed plant-based Japanese restaurant Shizen in 2015. In recognition of his work, Trenor was awarded a Congressional Commendation as well as the title "Hero of the Environment" by Time magazine.