“Chaetognatha,” commonly known as arrow worms, refers to a phylum of marine invertebrates characterized by their elongated, arrow-shaped bodies and distinctive lateral fins. They are typically transparent and are known for their predatory behavior, feeding primarily on small zooplankton. Chaetognaths play a significant role in marine ecosystems as both predators and prey. They are found in various oceanic environments, from surface waters to the deep sea.
