RIBBON WORMS Phylum NEMERTEA

Slender, quite delicate and highly contractile, ribbon worms have a digestive system with a separate mouth and anus, as well as a circulatory system complete with blood vessels. Most unique, though, is the proboscis or food capturing device, shown in the photograph of a chevron ribbon worm (NE5). Like a fluid-filled, inside-out finger of a glove, the proboscis is either sticky or has a venomous, thorn-like stylet on the inside. On a massive muscular contraction of the proboscis, hydrostatic pressure everts it to envelop prey—often a segmented worm.
At least 87 species of ribbon worms live in the marine waters of the Pacific Northwest.

NE1. GREEN RIBBON WORM, green nemertean worm, green nemertean, green and yellow ribbon worm, mussel ribbon worm, mussel nemertean worm

Emplectonema gracile, Emplectonema viride, Nemertes gracilis

NE2. LEOPARD RIBBON WORM

Emplectonema purpuratum

NE3. MOTTLED RIBBON WORM

Emplectonema buergeri

NE4. PURPLE RIBBON WORM, Verrill’s ribbon worm, lavender and white ribbon worm

Micrura verrilli, Lineus striatus

NE5. CHEVRON RIBBON WORM, two-spotted ribbon worm, two-spotted ribbonworm, chevron amphiporus, thick amphiporus, twisted brown ribbon worm, two-eyed ribbon worm

Amphiporus bimaculatus, Amphiporus angulatus

NE6. PINK-FRONTED RIBBON WORM, thin amphiporus, white nemertean

Amphiporus imparispinosus

NE7. WHITE RIBBON WORM

Amphiporus formidibalis, Amphiporus exilis

NE8. MANY-EYED RIBBON WORM

Amphiporus cruentatus

NE9. MUD NEMERTEAN, wandering ribbon worm, wandering nemertean, restless worm, purple ribbon worm, purple-backed ribbon worm

Paranemertes peregrina

NE10. SIX-LINED RIBBON WORM, six-lined nemertean, lined ribbon worm

Tubulanus sexlineatus, Carinella sexlineatus, Carinella sexlineata, Carinella dinema

NE11. ORANGE RIBBON WORM, orange nemertean, red ribbon worm, primitive ribbon worm

Tubulanus polymorphus, Carinella speciosa, Carinella rubra

NE12. WHITE-RINGED RIBBON WORM

Tubulanus albocinctus, Carinella albocinctus

NE13. WHITE-LINED RIBBON WORM

Quasitetrastemma nigrifrons, Tetrastemma nigrifrons

NE14. LIGHT-EDGED RIBBON WORM

Cerebratulus californiensis

NE15. ROSE RIBBON WORM

Cerebratulus montgomeri

NE16. BLACK RIBBON WORM

Lineus spatiosus

NE17. short orange ribbon worm

 

NE18. subtidal white ribbon worm

 

NE19. small tan ribbon worm