Worm extended for feeding from long curling tube. As opposed to terrestrial tree trunk or even "trunk" of large branching corals, the secured end of the tube worm becomes progressively narrower as its "root" end is approached.

Image ID: expl6923, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Location: Caribbean Sea, Mid-Cayman Rise
Photo Date: 2011 August 6
Credit: NOAA Okeanos Explorer Program, Mid-Cayman Rise Expedition 2011

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