Arlo Hemphill is a Senior Oceans Campaigner with Greenpeace USA.  He currently represents Greenpeace USA (GPUS) in the global Greenpeace Protect the Oceans campaign, dedicated to achieving a new UN global ocean treaty for the protection of biodiversity in international waters, and a global network of ocean sanctuaries to encompass 30% of the world’s oceans by 2030. 

A marine biologist, explorer and conservationist, Arlo has been working at the confluence of science, policy and communications in ocean science and conservation for over 20 years, representing organizations such as Conservation International, Stanford University, and the Mid-Atlantic Regional Council on the Ocean. 

A long-standing advocate for conservation on the high seas, Arlo was a founding steering committee member of the Deep Sea Conservation Coalition, the Forum for the Conservation of the Patagonian Sea, and the Sargasso Sea Alliance.  He most recently served as one of two co-leads on the Sargasso Sea Leg of Greenpeace’s Pole to Pole Expedition, a partnership between GPUS with Greenpeace Spain.