Taxonomy

Morphology
The morphology of this species was extensively described in a publication in the scientific journal Zoological Journal of the Linnean Society.The above image, taken using a camera microscope, reveals the nature of the fine ‘chaetae’ that give the worm its fluffy appearance.

Genetics
To determine if the new specimens from the Atlantic were really different to the Pacific specimens, scientists undertook detailed population genetic analyses using a gene called CO1.The results showed that the Norwegian fish farm and Swedish whale-fall species formed two distinct groups. This was the basis for naming a new species.