Hi G
That's a good point regarding the tides.
I suppose it throws up the contrast between farmers and fishermen.
Farmers work on a long solar time scale whereas fishermen work to a short lunar time scale. But I guess it's not that simple. Fishermen have a number of seasons throughout the year depending on which fish are accessible.
I wonder how this solar-lunar contast may have affected the belief systems/spiritual identities of prehistoric communities and could this have brought about conflicts between the two communities.
I would imagine that farming communities would have maintained fairly good relationships with their fisher-neighbours as both communities could have benefitted from a good trading relationship.