Posted by Larry Lovell on April 30, 2003 at 14:19:41:
In Reply to: What are these? posted by Chris on April 30, 2003 at 11:45:24:
These are probably polychaete tube ends, most likely of Chaetopterus. The pseudoannulate tube construction is not something I equate with this genus, but I do not see Chaetopterus tubes often. This genus makes a U-shapes tube with one end incurrent and the other excurrent. They filter feed by making a mucous funnel inside the tube, pump water to concentrate the plankton, then roll the tube into a ball and injest it.
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