This is a "walk through a market" post. I've done them before. As you know, Les Halles was the central wholesale food market in Paris until around 1970, when it was relocated to the suburbs. Car and truck traffic around the market was creating too much pollution and congestion. However, there are still retail street markets in the neighborhood. These photos are some I took at the bottom of the rue Montmartre and along the rue Montorgueil, around the église Saint-Eustache.
Some of the shellfish you see in the slideshow are scallops (coquilles St-Jacques), clams (two kinds, praires and palourdes), cockles (coques), and coquina [Donax variabilis] (tellines in French), as well as lobsters (homards), shrimp (crevettes), and crabs (crabes). There are also a lot of fresh fruits and vegetables and a couple of pans of cooked foods (one is a Spanish paella). The man selling those big globe artichokes you see toward the end of the slideshow wanted 15 euros apiece for them. I told him he was crazy. He didn't appreciate that. I think he saw me as a tourist and was trying to take advantage.