Coasts or Shorelines
The coastline or seashore is where the land meets the sea or ocean. A precise line that can be called a coastline cannot be determined due to the dynamic nature of tides. The term “coastal zone” can be used instead, which is a spatial zone where interaction of the sea and land processes occurs.
A shore or shoreline is the fringe of land at the edge of a large body of water, such as an ocean, sea, or lake. In Physical Oceanography a shore is the wider fringe that is geologically modified by the action of the body of water past and present, while the beach is at the edge of the shore, representing the intertidal zone where there is one. In contrast to a coast, a shore can border any body of water, while the coast must border an ocean; that is, a coast is a type of shore. Shore is often substituted for coast where an oceanic shore is meant.
Basic Celestia use also includes rivers as ‘shorelines’ so in this context ‘shores’ are any land directly bordering any kind of water. Creatures in these ranges tend to be at least semi-aquatic as their lives revolve around the water they live by.