title: Neopolynoe chondrocladiae
text: # Neopolynoe chondrocladiae
  
  Neopolynoe chondrocladiae is a scale worm known from the north-east Atlantic Ocean at depths of about 700 to 2500 m.
  
  ## Description
  
  Neopolynoe chondrocladiae can have up to around 94 segments with 15 pairs of elytra that bear a marginal fringe of papillae. The lateral antennae are inserted ventrally to prostomium, directly beneath the median antenna. The notochaetae are distinctly thicker than the neurochaetae and possess only simple tips.
  
  ## Biology
  
  Neopolynoe chondrocladiae has an obligate symbiotic relationship with the sponges Chondrocladia robertballardi and Chondrocladia virgata. The nature of the symbiotic relationship has been debated, but a 2021 study using a multidisciplinary approach suggested that the relationship is mutualistic, proposing that Neopolynoe chondrocladiae may use bioluminescence as a lure for prey which is consumed by both the worm and its sponge hosts.
  
  