Magnapinna sp. BMagnapinna sp. B is an undescribed species of bigfin squid known only from a single immature specimen collected in the northern Atlantic Ocean.DescriptionIt is characterised by its dark epidermal pigmentation, which is epithelial, as opposed to the chromatophoral pigmentation found in other Magnapinna species.DiscoveryThe only known specimen of Magnapinna sp. B is a juvenile male of mantle length held in the Bergen Museum. It was caught by the R/V G.O. SARS on July 11, 2004, at.