Figure 5; Owenia collaris Hartman, 1955. A) Worm partially inside its tube, B) anterior region and tentacular crown, ventral view, C) tentacular crown, lateral view, D-E) internal details of tentacular crown and pigmentation, F) neuropodial uncini, G) entire worm, removed tube. Scale bars: A) 2 mm, B–E, G) 0.5 mm, F) 1000x magnification.