This one, Pelagonemertes rollestoni, measures about 1.2 incles long. It's got a dart attached to its tongue, which it uses to harpoon zooplankton. Its yellow stomach reaches out to feed all parts of its body.
Photo: Russ Hopcroft, University of Alaska Fairbanks, Census of Marine Life
From the Upcoming ueue, submitted by Marilyn Terrell.