An example of describing is telling someone what your Halloween costume looks like.
She handed it to Connie, describing the entrance and house.
I guess 'situation' is one way of describing it.
Groucho quickly moved on, describing what happened.
The next weekend Carmen and Alex were having supper at Katie and Bill's house again and Alex was describing a place in Columbia.
The physical divisions of the Mediterranean given above hold good in describing the form of the sea-bed.