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
Barnacle (slang) determine the root cause of the problem. In some cases, manufacturing changes may need to be made such as trace contaminants being introduced during some phase of manufacturing. In other cases, the problem has to do with the design of the product and a change has to be made in the product design. When a product design change is required, often and when possible, a barnacle is designed so that existing products can be modified with the design change using the barnacle. By using a barnacle, the idea is that existing products do not need to be scrapped and replaced