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
Nora Barnacle her father out for drinking and the couple separated. Barnacle went to live with her mother and her uncle, Tom Healy, at 4 Bowling Green, Galway. In 1896, at age 12, Barnacle fell in love with a teenager named Michael Feeney, who died soon after of typhoid and pneumonia. In a dramatic coincidence, another boy she loved, Michael Bodkin, died in 1900 – causing some of her friends to call her "man-killer." Joyce later based the final short story in "Dubliners", "The Dead", on these incidents. It was rumoured that she sought comfort from her friend, budding English theatre starlet,