Home Acknowledgments Conventions Glossary Maps References Links Articles Thumbnails Species list Main page Next photo	Umbraculum sp. #3     buried   closeup of possible "breathing" channel   same animal, exposed shows animal buried in sand during the day; closeup shows what might be the end of a mucus-lined channel serving to maintain water circulation over its gill while resting...? Photos:  PF: Maalaea Bay, Maui; May 27, 2021.
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