Marine biologist says keeping oceans healthy more critical than ever

U.S. marine biologist and ocean explorer Sylvia Earle speaks during an interview with Xinhua in the Maritime Museum in Sydney, Australia, on Aug. 13, 2019. Sylvia Earle said that keeping the oceans healthy is more critical now than ever. Earle, 83, is in Australia this week at the Sydney Science Festival, visiting the city's spiritual home of oceanic education, the Maritime Museum, to deliver an address on the "State of our Oceans." (Xinhua/Bai Xuefei)