What is another word for chaetognath?
Pronunciation: [kˈiːtəɡnˌaθ] (IPA) 
A chaetognath is a type of predatory marine worm that is often referred to as an arrow worm due to its distinctive shape and hunting methods. Other synonyms for chaetognath include spiny-headed worms, bristle-mouthed worms, and transparent worms. These names all refer to the physical appearance and behavior of the animal, which is known for its spiky head, transparent body, and specialized hooks and tentacles used for capturing prey. Despite their small size and seemingly insignificant role in the marine ecosystem, chaetognaths play an important role as indicators of environmental health and as a food source for larger marine predators.
