[ncmncm]

It is a brilliant insight to reinterpret faulty oxygen measurements to extract a valid signal.

I wonder if anoxic regions could be made useful somehow.

[gus_massa]

Not useful for humans directly does not mean not useful at all.

I guess the bottom of them is a big carbon sink. Also, some bacteria and archaea like weird environment. Even some animals with very slow metabolism may enjoy a slow peaceful life in them or near the borders.

[zeristor]

I wouldn’t say the oxygen measurements are faulty, just hard to interpret.