In recognition of his work, Trenor was awarded a Congressional Commendation as well as the title "Hero of the Environment" by Time magazine.

[1] Over the course of his career, he has worked for and with a number of environmental causes, such as Greenpeace, FishWise, the Monterey Bay Aquarium, and the Conservation Strategy Fund.

[3] After graduation in 2005, Trenor obtained the position as director for the Invasive Species Program with the Conservation Strategy Fund.

In 2008, Trenor with Kin Lui and Raymond Ho founded Tataki Sushi Bar in San Francisco, California.

These campaigns have been both confrontational and cooperative, improving the seafood operations of major US companies such as Costco, Trader Joe's, Walmart, and Safeway.

[9] The studies and reports have continued to be produced by Greenpeace, which is still being used today to change the way the United States retail industry deals with seafood.

His work in the field of sustainable sushi led Trenor to become a major media contributor and speaker on the subject from 2008 onwards.

[17][18][19] In 2016, Trenor and Lui launched Limu & Shoyu in San Francisco that featured a sustainable interpretation of Hawaiian poke.

[23] In 2016, Trenor partnered with pop surrealist painter and environmental activist Caia Koopman to create Umijoo, a children's book about ocean conservation and responsible food systems.

Written as an extended poem in three parts, Umijoo spans 72 pages and features two dozen original paintings, as well as a series of pencil drawings.

In 2010, Trenor received the Ocean Protection Hero award from the Save Our Shores marine conservation NGO.