Dive 8: Crinoid
Video courtesy of the NOAA Office of Ocean Exploration and Research, 2016 Hohonu Moana. Download larger version

A featherstar, or unstalked, crinoid that was found attached to a coral during Dive 8. A discussion ensues around unbranched corals that are sometimes branched and whether crinoids or other animals could facilitate that by disturbing the coral's tissue and making room for other corals to grow.

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