The world’s oceans have lost 2 per cent of their oxygen on average over the last 50 years, alarming scientists who warn that the trend will impact fisheries
Source:
https://www.newscientist.com/article/2226511-scientists-issue-wake-up-call-on-dangerous-loss-of-oxygen-from-oceans/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home