In Tampa bay, red tide is already[1] killing literally tons[2] of fish per day. How long can this last without a complete collapse of the ocean ecosystems?
I'm pretty sure what we are seeing in very rapid real time is the collapse of not just the ocean ecosystem but all of them. It does appear that the time to turn around what we are doing was.... a while ago.
Oceans provide a huge amount of food. How long can humans manage even a partial collapse of the ocean ecosystem before there's a cascading collapse of civil society?