Megafauna abundance records during 2017 and 2018 SponGES Cruises (GSGS2017110 and GS2018108) with RV G.O. Sars and ROV Ægir 6000 on Schulz Bank, Arctic Mid-Ocean Ridge

Abundance records of megafauna observed in images extracted from six remotely operated vehicle (ROV) dives during two SponGES cruises conducted in the summers of 2017 and 2018. The ROV dives were performed by Ægir 6000 and the cruises were conducted on the RV G.O. Sars. The ROV dives traversed across various regions on the seamount, from the base of the seamount at 2700 m depth to the summit at 580 m depth. 600 images were selected and annotated from the dives where all megafauna >1 cm were documented in the imagery.