In 2004, the Taylor Energy production platform in Mississippi Canyon 20 (MC-20) was toppled by a mud slide during Hurricane Ivan and 25 of 28 oil wells were damaged. Oil sheens persisted until a containment system was put in place in 2019. In 2010, the Deepwater Horizon (DWH) blowout occurred in much deeper water about 60.5 km (37.6 mi) from the MC-20 site. Benthic sampling for macrofauna occurred throughout the Gulf in fall 2010, but stations from shallow water depths and west of the blowout site, which were near MC-20, were never analyzed.  Here, 47 archived sediment samples collected from 14 stations within 24 km of the MC-20 site have been analyzed for benthic abundance, biomass, and diversity to determine if impacts from the MC-20 spill could be identified and distinguished from DWH impacts.