Chaetognatha facts for kids
Temporal range: Lower Cambrian to Recent
About 20% of the known species are benthic and can attach to algae or rocks. They are found in all marine waters from surface tropical waters and shallow tide pools to the deep sea and polar regions. Most chaetognaths are transparent and are torpedo shaped, but some deep-sea species are orange. They range in size from 2 to 120 millimetres (0.079 to 4.724 in).
These animals are usually considered a type of protostome.
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Chaetognatha Facts for Kids. Kiddle Encyclopedia.