| Summary: | Since 2003, a stratified random summer bottom trawl survey was conducted by Spain in the NAFO Regulatory Area of Division 3L (Flemish Pass). The surveys were carried out by the R/V “Vizconde de Eza” using bottom trawl net type Campelen 1800. Entire series of mean catches, biomass and length distribution for Greenland halibut, American plaice and witch flounder are presented for the period 2003-2018. Greenland halibut biomass and abundance estimates presented an increasing trend since 2011, reaching in 2017 the highest value of the entire time-series. In 2018, the biomass shows a decrease. For American plaice biomass and abundance estimates show an increasing trend since 2010, reaching in 2015 the highest value in the series; since 2016, all indices decreased. Regarding witch flounder, the biomass and abundance show no a clear trend in the whole period, reaching the maximum of the series in 2010 and 2015. The 2018 biomass estimate continue the declining trend observed in 2016.
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