David McGuire

An avid writer, surfer and ocean voyager, David McGuire is the founder of the conservation non profit Sea Stewards and is an advocate for a healthy ocean. As Captain, Dive Master and Cinematographer, David has explored the world ocean on numerous sailing voyages collecting media with an emphasis on ocean awareness.Educated in Marine Biology, he holds a masters degree in Environmental Health and has worked in education and public health at the University of California at Berkeley for over a decade. David is the writer, producer and underwater cinematographer of the award winning documentary Sharks: Stewards of the Reef, and was writer and cinematographer on a film on California Marine Protected Areas, and Palmyra Atoll. David has written, filmed and produced a new documentary on the Sharks of San Francisco Bay and has worked as cameraman on feature films such as 180 South and A Beautiful Wave. His underwater filmwork on San Francisco elasmobranches and ecosystems continues and he frequently donates his work for conservation causes. As Field and Research Associate with the California Academy of Sciences, David is Project Manager of a shark research program on the San Francisco Bay and has initiated a new sharks awareness campaign: Shark Sanctuary San Francisco. Through expedition sailing and video production, Sea Stewards is exploring and explaining our ocean world, influencing policies and practices from sustainable fishing to marine protection. Through Sea Steward Studios, our Media Production work is used to influence sound policies and sustainable ocean practices. Current work includes a series on Sea Turtle Conservation in Mexico, a film with partners Team Fish Finders using local fishermen to promote catch and release and a documentary on local sustainable seafood and a Cordell Banks Expedition.

Sanctuary for Whales, Sanctuary for Sharks

Yesterday I led another expedition out into the Gulf of the Farallones on the Outer Limits with Captain Jimmy. Primarily billed as whale watching, these trips are really about the entire ecosystem, and when I’m aboard, we talk shark, because sharks are what I love, study, advocate and protect through my non-profit Sea Stewards.


Rise Above Plastics

Plastic is forever, with virtually every piece of petroleum-based plastic ever made still in existence. That's why it's so critical to oceans and beaches that we dramatically reduce our use of plastics, especially single-use plastics.

Bird and cap

Clean it Up

Plastic in the ocean doesn’t go away, it just gets smaller. Approximately 70% of this plastic sinks to the bottom where it sits like a time bomb waiting to be assimilated.

Shark Week and the State of Sharks

This week millions of viewer’s eyes will be turned to "Shark Week", the Discovery Channel's most popular program. With shows like "Top Five Eaten Alive", "Killer Sharks and Rogue Sharks", the program continues to dish up blood, teeth and fear, while perpetuating the irrational perception that sharks are killing machines.