More than '100 millions tons of plastic' in the ocean: expert More than '100 millions tons of plastic" float in the ocean, says Rolph Payet, Executive Secretary of the Basel Convention on the Control of Transboundary Movements of Hazardous Wastes, as a Working Group meets in Geneva to see how to improve this Convention in order to better address the issue of plastic waste in the oceans. IMAGES & SOUNDBITES