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![Although moderately sparse life forms on this rock substrate, they arerelatively diverse with at least four coral species and poliopogon sponges inthe view expn6085.jpg Although moderately sparse life forms on this rock substrate, they arerelatively diverse with at least four coral species and poliopogon sponges inthe view](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_expn6085.jpg?itok=RjsqUMfg)
Description
Although moderately sparse life forms on this rock substrate, they arerelatively diverse with at least four coral species and poliopogon sponges inthe view. The dead base of what must have been a huge sponge is on the rightedge of the image. (Image credit: NOAA Office of Ocean Exploration and Research, 2015 Hohonu Moana)