Zooplankton and CO2 storage:

[applegrove]

https://www.bbc.com/news/articles/c628nnz3rp9o

A tiny, obscure animal often sold as aquarium food has been quietly protecting our planet from global warming by undertaking an epic migration, according to new research.

These "unsung heroes" called zooplankton gorge themselves and grow fat in spring before sinking hundreds of metres into the deep ocean in Antarctica where they burn the fat.

This locks away as much planet-warming carbon as the annual emissions of roughly 55 million petrol cars, stopping it from further warming our atmosphere, according to researchers.

This is much more than scientists expected. But just as researchers uncover this service to our planet, threats to the zooplankton are growing.

[Traildogbob]

1. Also

As the zooplankton take in Carbon through photosynthesis, they create and release Oxygen.
Estimates are the world’s waterways release slightly over 50 percent the oxygen created to sustain terrestrial life.
So they not only sustain aquatic life as food and generate oxygen in the water, they create over half the oxygen we need, and feed the fish we consume.
So, should we be concerned about poisoning all the water ways, now at rates, “The likes of which humans have never seen”, With trump and GQP eliminating all regs to protect that resource from Corp dumping? I would say, “he’ll fucking yes!!!!”