From the backshore to the shoreface
A major part of my on-going research focuses on burrows and trails. However, the geological (sedimentological) context cannot be ignored when studying the products of organism-substrate interactions. In fact, sediment texture commonly reflects the hydrodynamic setting.
In the images of this post, you can see how sediments change from the backshore (pebbly sands) to the shoreface (rippled sand). This plays an important role in structuring biologic communities of the seafloor.