Barnacle Barnacle A barnacle is a type of arthropod constituting the infraclass Cirripedia in the subphylum Crustacea, and is hence related to crabs and lobsters. Barnacles are exclusively marine, and tend to live in shallow and tidal waters, typically in erosive settings. They are sessile (nonmotile) suspension feeders, and have two nektonic (active swimming) larval stages. Around 1,220 barnacle species are currently known. The name "Cirripedia" is Latin, meaning "curl-footed". The study of barnacles is called cirripedology. Barnacles are encrusters, attaching themselves permanently to a hard substrate. The most common, "acorn barnacles" (Sessilia), are sessile, growing their shells directly onto the
What Kind of an American are You? What Kind of an American are You? What Kind of an American are you?, also known as What Kind of American are you?, is a World War I era song released in 1917. Albert Von Tilzer composed the music. Lew Brown and Charles R. McCarron wrote the lyrics. The song was published by Broadway Music Co. of New York, New York. On the cover is a gray drawing of Uncle Sam pointing. A map of the United States is featured on the lower half of the cover. The song was written for voice and piano. The sheet music can be