I'm guessing the beaches usually look a bit better - this was the day after a weather front passed through. And I don't recall any barges although they are used in the area sometimes.
This island resulted from human activity and is known by two different names. Although not of natural origin it isn't polluted and you can find live sand dollars in the tide pools. It is "our" cat in the picture but I'm not really fond of cats and would usually charter a mono (yes that's a clue).