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![Closeup of biota on rock including encrusting sponges, small brittle stars,small shiny bivalves, hydroids, and nearly invisible tube worms (look for thewhite filaments with radial patterns) expn0297.jpg Closeup of biota on rock including encrusting sponges, small brittle stars,small shiny bivalves, hydroids, and nearly invisible tube worms (look for thewhite filaments with radial patterns)](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_expn0297.jpg?itok=rCXBEOH3)
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Closeup of biota on rock including encrusting sponges, small brittle stars,small shiny bivalves, hydroids, and nearly invisible tube worms (look for thewhite filaments with radial patterns). Although the large biota covering manyareas is easy to see, virtually (Image credit: NOAA OKEANOS Explorer Program , 2013 Northeast U. S. Canyons Expedition)