arrow worm

(redirected from arrow worms)
Related to arrow worms: acorn worms

arrow worm

n.
Any of various small slender marine worms of the phylum Chaetognatha, having a narrow, almost transparent body and spines on each side of the mouth that are used for grasping prey. Also called chaetognath.
Translations
nuolimato
Mentioned in ?
References in periodicals archive ?
We also provide in-depth observations on the morphology, chemistry, and ultrastructure of the unique honeycomb-like structures of both species of bioluminescent arrow worms.
Both of the luminescent species of arrow worm, despite coming from widely separated orders within the phylum, share the relatively uncommon trait among chaetognaths of having an orange-pigmented gut lining (Terazaki et al.
Oriented light reactions of the arrow worm Sagitta crassa Tokioka.
Some examples include arrow worms (or chaetognaths - see photo above) and amphipods (photo at right), which are voracious predators on copepods and larvae of larger species.