dumb question

[rtfox68]

What is the shimmering arrow pointing away from AI cities?

 

[SinisterSamurai]

My bet is that you're talking about aquatic cities, and it's the indicator that those cities are in the process of moving. If you found a water city and try to move it, you'll see the same indicator on one of yours.

 

[TheMarshmallowBear]

On water cities? It designates the destination of where the city is moving to.