noun
vestimentiferan; tube worm (order Vestimentifera)
A deep-sea tube worm; the Japanese name literally means 'haori worm' because the worm's plume resembles a haori coat. Used mainly in marine biology contexts.
ハオリムシは熱水噴出孔の周りに生息している。
Vestimentiferan tube worms live around hydrothermal vents.
深海調査で新種のハオリムシが発見された。
A new species of vestimentiferan was discovered during the deep-sea survey.
チューブワーム is a broader term for tube-dwelling worms, while ハオリムシ specifically refers to vestimentiferans, a subgroup of tube worms found at deep-sea vents.
From 羽織 (haori, a traditional Japanese coat) + 虫 (mushi, worm), referring to the plume's resemblance to a haori. The exact derivation is uncertain, but the name is conventionally associated with this appearance.