With this information, they could determine when ocean deoxygenation due to climate change is likely to become more severe than at any point in the modeled historic range. (sciencedaily.com)
In fact, declining oxygen concentrations in the ocean's interior are currently found to be a near - ubiquitous phenomenon for which the term ocean deoxygenation has been proposed. (ldeo.columbia.edu)
The ocean has been experiencing substantial changes in marine physics, chemistry and biology including ocean acidification, rising seawater temperature, ocean deoxygenation and sea level rise. (ocean-partners.org)