Dan Thomson

Internationally Recognized Leader in Animal Welfare, Beef Cattle Production & Cattle Health Management

Dana Ellis Hunnes

Author of "Recipe For Survival"

Daniel Esty

Hillhouse Professor of Environmental Law and Policy at Yale Law School, Corporate Environmental Strategy Expert & Co-Author of "Green to Gold"

Daniel Pauly

Daniel Pauly is the principal investigator at the Sea Around Us Project, which studies the impact of the world's fisheries on marine ecosystems. The software he's helped develop is used around the world to model and track the ocean.

Daniel Streicker

Animal-borne Disease Researcher

Daniela V. Fernandez

Founder & CEO of Sustainable Ocean Alliance

Danielle Lee

Research Biologist, Blogger & Outreach Scientist

Danni Washington

TV Host, Science Communicator, Ocean Explorer & Nature Advocate

Daphne Frias

Climate Change, Disability & Environmental Activist

Darin Olien

Co-Host of Netflix "Down To Earth" with Zac Efron, Best-Selling; Original Formulator of "Shakeology;" Healthy Living & Superfoods Expert

Dave Salmoni

Animal Planet Television Personality & Large Predator Expert

David Backes

David Duchovny

Actor, Writer & Director Known for "The X-Files," "Aquarius" & "Californication"

David Guggenheim

Marine Scientist, Conservation Policy Specialist & President and Founder of Ocean Doctor

David Lang

Cofounder, OpenROV

Deborah Brosnan

Founder & President of Deborah Brosnan & Associates

Dee Boersma

Conservation Biologist & Professor at the University of Washington

Demian Chapman

Senior Scientist & Director at the Center for Shark Research

Denis Hayes

Organizer of the First Earth Day; CEO of The Bullitt Foundation

Dion R. Studinski

Professional Dog Trainer, Owner & Founder of Ancillary K9 Dog Training