(as designated by Zsilavecz, 2007) [citation needed], is a species of sea slug, a nudibranch.
In 2009, this species had only been found off South Africa, in False Bay off Windmill Beach, in at least 10 m of water.
[citation needed] Pierre's armina grows up to 70 mm (2.8 in) in length.
It is a black-bodied nudibranch with raised white longitudinal ridges.
[1] Pierre's armina burrows in sand and feeds on the purple sea pen, Actinoptilum molle.