||Bedding planes that are exposed (either on the surface or at depth) often form ledges
that have a high habitat value and support colonizing plants and animals. Ledges often
provide a more level surface than the bounding slopes. Ledges in the intertidal zone
can form shelves or projections of rock (that are much longer than they are wide)
on a rock wall or cliff face. They are formed along a coast by differential wave action
on softer rocks and may be eroded by biological and chemical weathering.