tubeworms

/ˈtjuːbˌwɜːrmz/
noun
  1. Plural of tubeworm; marine worms that live in protective tubes.
    • The aquarium has a special exhibit featuring giant tubeworms.
    • Tubeworms are often found in clusters around deep-sea vents.
    • Scientists study tubeworms to understand how life survives in extreme environments.
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