Figure 2: Close-up of the tubular sponge showing the retracted polyps of a commensal cnidarian (yellow spots in branches).
Sponge
Image courtesy of the NOAA Office of Ocean Exploration and Research, 2017 Laulima O Ka Moana.
Close-up of the tubular sponge showing the retracted polyps of a commensal cnidarian (yellow spots in branches). Download larger version (jpg, 208 KB).
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