[rorykoehler]

I was under the impression that micorplastics are acidifying the ocean and in turn kicking off a process that removes oxygen and creates dead zones?

[TeMPOraL]

I've never heard about that. As far as I know, acidification is caused by the oceans picking up CO₂ from the atmosphere.

https://en.wikipedia.org/wiki/Ocean_acidification

[rorykoehler]

A quick search seems to back you up. If that is the case how did sealife survive during times of high co2 concentrations historically?

[im3w1l]

It's not that high CO2 is intrinsically bad. It's just that the change is happening quicker than a lot of species can adapt.