Funiculina quadrangularis (Pennatulacea) and Isidella elongata (Alcyonacea) distributions from scientific trawl surveys by-catches

Density (number per km²) and biomass (g per km²) of Funiculina quadrangularis (Pennatulacea) and Isidella elongata (Alcyonacea) observed in bottom trawl scientific surveys (French MEDITS and NOURMED) by-catches from 2012 to 2019