These two colonies could be equated to a before and after shot of colonization by gold coral and likely host colony species, bamboo coral.
Two Colonies
Image courtesy of the NOAA Office of Ocean Exploration and Research, Deep-Sea Symphony: Exploring the Musicians Seamounts. Download larger version (jpg, 1.4 MB).

These two colonies could be equated to a before and after shot of colonization by gold coral and likely host colony species, bamboo coral.

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