Less oxygen dissolved in the water is often referred to as a «dead zone» (in red above) because most marine life either dies, or, if they are mobile such as fish, leave the area.
Not exact matches
One more detail bears mentioning: warmer water also holds
less dissolved oxygen.
[SEPP Comment: Taking on a study that claims that warming oceans will lead to
less dissolved oxygen therefore smaller fish.
Because warm water holds
less oxygen than cold water, oceans are expected to lose some of the
dissolved gas as a consequence of climate change.
While there is little doubt that
dissolved oxygen concentrations exerted a key control on benthic ecosystems during the past, as they do today, the impact on pelagic ecosystems is
less straightforward.