The Cenomanian-Turonian anoxic event may have an analogue in prophecy. So what does the scripture say? Is there any evidence that an anoxic mass-extinction event is recorded in the Bible?
A Tribulation Anoxic Event
November 5th
One third of all sea creatures are killed by an extraterrestrial impact, presumably because of the shock wave from it and an increase in temperature. Eventually the sea becomes so polluted that nothing can survive.