Ralph: I've just started at actra sx costa rica "By comparing identical tracks video-surveyed by remotely operated underwater vehicle in one of the least accessible parts of the Antarctic, we found two- and three-fold increases in the biomass and abundance of glass sponges, respectively, from 2007 to 2011," said Claudio Richter of the Alfred Wegener Institute in Germany. "This is much faster than any of us would have thought possible."