This work was partially supported by the David and Lucile Packard Foundation contributions to MBARI. We thank principal investigators James P. Barry, David A. Clague, the crew of the research vessels Western Flyer and Point Lobos, the pilots of ROVs Tiburon and Ventana, and Mary Sue Brancato of the Olympic Coast National Marine Sanctuary. We also thank Jei-Ying Chen for her help in the making of scanning electron micrographs and Judith Connor, Kyra Schlining, Nancy Jacobsen Stout, and Susan von Thun for proofreading the manuscript. We also thank the anonymous referees for reviewing the manuscript.
Edited: L.P. van Ofwegen