This 13 December 2019 video says about itself:
Crinoids, with their elegant, flower-like appearance, are commonly known as feather stars and sea lilies. MBARI remotely operated vehicles have observed several crinoid species from shallow to deep areas on the seafloor from the Aleutian Islands off Alaska to Baja California, Mexico. Their feathery arms capture small plankton, drifting in the currents. The food is then moved to the mouth, which faces up in the center of the arms. Sea lilies are always attached with a holdfast and cannot move. However, feather stars can swim away at the slightest disturbance.