New Delhi, Dec. 9 -- The loss of oxygen from the world's ocean is increasingly leaving sea life, fisheries and marine species such as tuna, marlin and sharks gasping for breath, a new report by the International Union of Conservation of Nature (IUCN) has warned.
In its report "Ocean deoxygenation: Everyone's problem", released at the UN Climate Change conference in Madrid, the global conservation body said that about 700 sites had been identified globally with low oxygen levels - up from only 45 in the 1960s.
In the same period, the IUCN warned in the largest peer-reviewed study to date that the volume of anoxic waters - areas totally devoid of oxygen - have quadrupled.
"With this report, the scale of damage climate change is wreaking up...