Johnson's research interests focus on urban
ocean conservation,
sustainable fishing,
ocean zoning,
climate change, and
social justice. Johnson has conducted research on the bycatch impacts in Caribbean coral reef trap fisheries and has also collaborated on research related to international collaboration for reducing the impacts of climate change on small island states. Prior to graduate school, Johnson worked for the
U.S. Environmental Protection Agency. After completing her PhD, Johnson worked for the
National Oceanic and Atmospheric Administration and then went on to work as the Director of Science and Solutions at the
Waitt Foundation in
Washington, D.C. to fund ocean conservation projects. In 2013, she became executive director of the
Waitt Institute and co-founded the Blue Halo Initiative to partner with governments and local communities in
Barbuda,
Montserrat, and
Curaçao to enact more sustainable plans for ocean use and conservation. With the Blue Halo Initiative, Johnson led the Caribbean's first successful ocean zoning project, providing maps, communications, policy support, and scientific assistance to the island Barbuda as it began to regulate and protect its coastal waters. Currently, Johnson works as a consultant for ocean conservation and climate policy issues and leads Urban Ocean Lab, an ocean policy think tank that she co-founded with Jean Flemma and Marquise Stillwell. a consulting firm that helped find ocean "conservation solutions grounded in social justice". Johnson was a national co-director of partnerships for the inaugural
March For Science in 2017. with co-creator and co-host
Alex Blumberg. In September 2020 One World/
Penguin Random House published Johnson's first book
All We Can Save, which is an anthology of writing by women climate leaders edited by Johnson and
Katharine Wilkinson. In November 2021, Johnson organized a joint statement signed by over 100 notable figures demanding that
Edelman end its work with fossil fuel companies, such as
Exxon. She also promoted the hashtag #EdelmanDropExxon on social media. She was the editor for
The Best American Science and Nature Writing 2022– a collection of science and nature articles published in 2021. In July 2023, Johnson began a three-year tenure as the Roux Distinguished Scholar at
Bowdoin College. book
What If We Get It Right? Visions of Climate Futures published by One World/
Penguin Random House. It received a starred review in
Publishers Weekly, which called it "a much-needed antidote to 'climate grief.'" In November 2025, the book won the Phi Beta Kappa Award for Science. == Honors and recognition ==