Sandcastle worm in laboratory closeup

Description:

Description: English: A sandcastle worm (Phragmatopoma californica) in the laboratory of Russell Stewart, University of Utah, making a tube out of sand (yellow) and beads of zirconium oxide (white). Date: November 2008. Source: University of Utah. Author: Fred Hayes for the University of Utah. Permission(Reusing this file): : This work is free and may be used by anyone for any purpose. If you wish to use this content, you do not need to request permission as long as you follow any licensing requirements mentioned on this page. The Wikimedia Foundation has received an e-mail confirming that the copyright holder has approved publication under the terms mentioned on this page. This correspondence has been reviewed by an Volunteer Response Team (VRT) member and stored in our permission archive. The correspondence is available to trusted volunteers as ticket #2009110110023383. If you have questions about the archived correspondence, please use the OTRS noticeboard. Ticket link: https://ticket.wikimedia.org/otrs/index.pl?Action=AgentTicketZoom&TicketNumber=2009110110023383.