The ornate worm is often found in marine environments also inhabited by Notomastus lobatus (Polychaeta) and Saccoglossus kowalewskyi (Hemichordata), which produce and contaminate sediments with bromophenols and bromopyrroles.
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The ornate worm, Amphitrite ornata, is often found in marine environments also inhabited by other Polychaete worms which produce and contaminate sediments with bromophenols and bromopyrroles.