What is a Raised Beach and How are they formed?

One of our new listings here in Gulf Shores Alabama has a raised beach. https://tinyurl.com/y8z8zctr
What is a raised beach and how are they formed?
There are several conspicuous parts to a beach that relate to the processes that form and shape it. The part mostly above water (depending upon tide), and more or less actively influenced by the waves at some point in the tide, is termed the beach berm. The berm is the deposit of material comprising the active shoreline. The berm has a crest (top) and a face—the latter being the slope leading down towards the water from the crest. At the very bottom of the face, there may be a trough, and further seaward one or more long shore bars: slightly raised, underwater embankments formed where the waves first start to break.  Yes I know right, Wikipedia has a great explanation for it.  Check it out.