David Helvarg is president of the Blue Frontier Campaign and the author of five books: The War Against the Greens, Blue Frontier, 50 Ways to Save the Ocean, Rescue Warriors, and Saved by the Sea. An award-winning journalist, he produced more than 40 broadcast documentaries for PBS, The Discovery Channel, and others.

Larry McKinney

The mission of the Long Beach, California-based Aquarium of the Pacific is to instill a sense of wonder, respect, and stewardship for the Pacific Ocean and its inhabitants. Through its year-round Guest Speaker Series, visitors are able to learn about the most current and pressing issues related to the ocean and environment. Experts share their knowledge and stories about local and global conservation issues in these short video podcasts.