I really really dislike seafood, dabble in it anyway, and want to learn more about its history. Here is my unresearched hypothesis:
Maybe all paleo people didn't live by the sea, but everyone, including inland dwellers, had to drink water. Fish live in rivers and pondstoo. People clustered around water. Yadda yadda yadda.
Google won't give me an a good answer, so I'm looking to the Borg collective here for some input. Here is what is hinging on the answer. I still get the lion's share of my omega 3 from fish oil. It's the only "supplement" I really need except vitamin D in the winter. If all of humanity was brought up on seafood, I would definitely consider eating it more than once a week. I recall that someone, maybe Melissa, posted a link somewhere about ancient water-dwelling and seafood eating, perhaps. Cough up the links again please, and any other relevant info.