Known coral predators, several pencil urchins were seen clinging to corals, likely consuming soft tissue and leaving the bare coral skeleton visible on several branches.
Pencil Urchins
Image courtesy of the NOAA Office of Ocean Exploration and Research, Discovering the Deep: Exploring Remote Pacific MPAs. Download larger version (jpg, 1.3 MB).

Known coral predators, several pencil urchins were seen clinging to corals, likely consuming soft tissue and leaving the bare coral skeleton visible on several branches.

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