Overview

Comprehensive Description

External Appearance

(from Coe, 1904) Usually pale yellow throughout but some specimens have a distinct reddish tinge. Others may be grey, greenish, or pale green. A median pale line appears on the dorsal surface in the region of the esophagus. This is a very slender thread-like species. Body is commonly thicker in the middle and tapers toward both head and tail. Head is very long and sharply pointed when extended. Proboscis pore is ventral and farther back from the tip of the snouth. The mouth is very far back.

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Distribution

Common on the coast of New England, shores of northern Europe, Mediterranean, Pacific coast of USA (Alaska)

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Source: Nemertea

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Physical Description

Morphology

Sensory Organs

Eyes are absent in adults although embryos have a single pair soon after they leave the egg.

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Source: Nemertea

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Size

Can extend 3-6 inches but can contract to a fraction of this length.

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Source: Nemertea

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Ecology

Habitat

Depth range based on 3 specimens in 1 taxon.

Environmental ranges
  Depth range (m): 0 - 0
 
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Very common at high water mark under stones and in muddy places, among decaying mussels, etc. The worms were commonly found in black, slimy, and very foul mud.

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Source: Nemertea

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Associations

Known Prey Organisms

They are often associated with reddish nematodes.

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Life History and Behavior

Behavior

Capable of great extension and contraction. Individuals may extend themselves until they resemble a very fine thread, but if disturbed, may quickly coil themselves into a closely wound spiral.

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