Barnacles Feeding
Video courtesy of the NOAA Office of Ocean Exploration and Research, INDEX-SATAL 2010. Download larger version (mp4, 36.7 MB).

Barnacles feeding at Kawio Barat. These barnacles are stalked, which most likely benefits the barnacle by getting it up off the seafloor and into the water column, raising its likelihood of encountering passing plankton while feeding.