It is also used in various clam chowder and oyster stew recipes. Aquacultured shellfish include various oyster, mussel, and clam species. The quahog is a large local clam usually used in a chowder. It is also known as the Northern quahog, round clam, or chowder clam. It is also central to the flavoring of clam chowder. The name came from the word "Liboo", a kind of mussel clam. The geoduck is the largest burrowing clam in the world. The typical mold is shaped like a clam shell. A geoduck is a clam native to the region. There are also incense containers made of clam shells. They have a shell in two pieces which resemble the valves of a minute clam. The latter include the giant clam and various nudibranchs and cone snails. The shell of the nut clam "Condylonucula maya" grows 0.54 mm long. It was at this point he noticed strange sounds coming from a gigantic clam shell. The painting showed a nude inside a form representing a clam shell.