Ocean oxygen levels drop endangering marine life: Report

Al Jazeera | Dec 7, 2019 at 5:38 PM
  • The International Union for the Conservation of Nature (IUCN) said on Saturday that about 700 sites had been identified globally with low oxygen levels – up from only 45 in the 1960s.
  • The group this year issued a landmark assessment of the world’s natural habitats, concluding that human activity was threatening up to one million species with extinction.