[spodek]

> Life is teeming nearly everywhere in the oceans

Historically, this was true but no longer. There is a fraction of the life that the ocean used to support. A great source is the book Once and Future World, which describes captains' logs before steamship. They reported that ships at sea would be stopped in the middle of the ocean, far from land, by schools of fish that densely packed. Today, people are happy to see a whale if they visit the coast. Not long ago, people could see whales as far as the eye could see all day long some times of year.

Also, to call the waters "oxygen-starved" in response to climate change misses the cause and effect. Specifically, human behavior is causing these things. They aren't just happening. If we change our behavior, we can change the results.

Clarifying the cause and effect helps clarify what to do about it besides passively watch it happen.

[pixl97]

Even farther back in history there have been massive anoxic ocean events in the fossil records. Based on what we've discovered they tend to correlate with other mass extinctions.