Marcus Eriksen is the co-founder of Leap Lab, as well as the Research Director and co-founder of the 5 Gyres Institute. He studies the global distribution and ecological impacts of plastic marine pollution, which has included expeditions sailing through all 5 subtropical gyres, Bay of Bengal, Southern Ocean and inland lakes and rivers, recently publishing the first global estimate of all plastic of all sizes floating in the world’s oceans, totaling 270,000 metric tons from 5.25 trillion particles.