tl;dr:
in Brittany, seaweed appears in huge amounts as nitrates pollute the sea, courtesy of the pork industry.
as it rots, hydrogen sulfide is produced.
hydrogen sulfide stinks. but more hydrogen sulfide stinks less, as it starts to numb your olfactory sense. then it kills.
I heard once at least that no toxic/poisonous seaweed grows in the ocean north of, what the 35th parallel was it?
Maybe that’s just the west coast of North America though, the water is cold up and down it. Idk about cyanobacteria though. We have that in fresh water at 42 lattitude so idk.
I don’t know about the 35th parallel thing either way, but I don’t think it matters here. The seaweed itself isn’t normally poisonous, it’s actually edible to humans and tastes pretty good. The issue here is what happens when it starts rotting in large quantities
Thank you for the summary
hydrogen sulfide
There was an accident in a german tannery lately with 5 casualties
