Feeding strategies of deep-sea sub-Arctic macrofauna of the Faroe-Shetland Channel: Combining natural stable isotopes and enrichment techniques

► First study of the response of a deep-sea macrofaunal community at sub-zero temperatures. ► δ15N data alone were not sufficient to distinguish between feeding types. ► Combination of δ15N-13C uptake unravelled the feeding preferences of organisms. ► Feeding type classification of deep-sea benthos based on shallow water analogues is not always accurate.► Deep-water animals may respond to the limited food supply by omnivorous feeding.