The body of the worm is buried in the sand - what you can see here is the feeding filter. They normally retract in the blink of an eye but this one was a bit slow...
Washington State Department of Ecology
Flickr Group
Eyes Under Puget SoundThis species image was collected from Puget Sound sediments and photographed by the Washington State Department of Ecologys Marine Sediment Monitoring Team. For more information about this teams work visit: ecology.wa.gov/Water-Shorelines/Puget-Sound/Sound-science...Cant get enough benthos? Check out our Eyes Under Puget Sound - Critter of the Month blogs at: ecology.wa.gov/Blog/Search?tag=7&category=2
The genera vermium exemplified by various specimens of the animals contained in the orders of the Intestina et Mollusca Linnaei :.London :Printed for the author by James Dixwell ..., and sold by John Sewell ..., B. White and Son ..., and P. Elmsley ...,1783-1788..biodiversitylibrary.org/page/29389828