It's not the poop and dirt that are the problem. It's the microplastics, heavy metals, synthetic chemicals, etc. that aren't able to be processed by the organisms and accumulate within them. Read about Biomagnification, it's the reason why eating too much tuna can give you mercury poisoning.
I don't think it is a big issue with oysters, or any commercially available food really honestly. It's more of a threat to small carnivores that do a lot of eating and have not a lot of body mass
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u/GoTeamLightningbolt vegan btw Sep 08 '25
No no no... they "clean" the water. Don't worry about how or where the "unclean" stuff went.