Similarly if you move a piece inland, you move it further away from the Ocean: each land it moves through must be further from (any) Ocean than the one it left.
All game notions of "closer" and "further" use Range – you never need a ruler, and a land that looks physically closer might not actually be at shorter Range! (Discussion elsewhere) Tags: Range, Move, Sweep into the Sea
For example, if you use Crops Wither and Fade, you always gain 2 fear and then you may choose whether you are replacing a City or a Town. On the other hand, on Tormenting Rotflies, you either choose everything above the "or" or everything below it.
If the Invaders are in a Coastal land, with Sweep into the Sea you can choose to either push them into the nearest Ocean (which is right there) or destroy them; with Ocean's Hungry Grasp in play, it will usually be better to push and Drown them. (Discussion elsewhere) Tags: Ocean's Hungry Grasp, Sweep into the Sea