Pelagic Gooseneck Barnacle / Smooth Gooseneck Barnacle {Lepas anatifera} showing extended cirri, thoracic legs covered in sensory hairs with which the barnacle filters plankton from the water to eat. The cirri also contain gills for breathing. This species is found attached to flotsam floating at sea. Photographed against a white background in mobile field studio. Pembrokeshire, Wales, UK. January.