Comb Bathyark

<em>Bathyarca pectunculoides</em>, commonly known as the comb bathyark, is a small deep-sea bivalve in the family Arcidae, assessed as Vulnerable on the IUCN Red List. The species has been recorded from the cold marine waters of Denmark, Norway, and Sweden, indicating an association with the northeastern Atlantic and Scandinavian shelf environments. As a member of the ark clam family, it possesses a characteristic elongated shell with a comb-like toothed hinge that gives the genus its common name. <em>B. pectunculoides</em> inhabits benthic environments at depth, where it attaches to hard substrates or lives within soft sediments. Its Vulnerable status reflects concern over its restricted distribution and sensitivity to environmental disturbance in its deep-water habitat. Biological metrics including lifespan, body dimensions, and weight are not specified in the current record. The species likely feeds on suspended organic particles as a filter feeder.