A corallium that is nearly completely overgrown by zooanthid (another type of cnidarian) and a brittlestar living in association. This particular species of coral is not commercially harvested, but is in the precious coral group that is often commercially harvested for jewelry at shallower depths.

A corallium that is nearly completely overgrown by zooanthid (another type of cnidarian) and a brittlestar living in association. This particular species of coral is not commercially harvested, but is in the precious coral group that is often commercially harvested for jewelry at shallower depths. Image courtesy of the NOAA Office of Ocean Exploration and Research, 2015 Hohonu Moana.

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2015 Hohonu Moana: Exploring Deep Waters off Hawai’i

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