Final answer:
Rocky shorelines are typically found in coastal zones where the influence of waves and tidal actions shape the terrain.
Step-by-step explanation:
A rocky shoreline would be most likely to be found in coastal zones. Coastal zones are regions where the land meets the sea and are typified by their intertidal zones where the environment changes with the tide. These regions can have sandy beaches, but also often include rocky shorelines. The rocks in such shorelines can be shaped by waves and tidal actions, which are behaviors specific to coastal areas rather than deserts, mountains, or grasslands.