Porphyrocrinus sea lilies attach to hard substrates via a holdfast and have arms that terminate in slender filaments.
Sea Lilies
Image courtesy of he NOAA Office of Ocean Exploration and Research, 2017 American Samoa. Download larger version (jpg, 1.2 MB).

Porphyrocrinus sea lilies attach to hard substrates via a holdfast and have arms that terminate in slender filaments.

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