During the last oceanographic cruise conducted in autumn
2009, PROMETEO V,two extra depths were sampled. i.e.1750 and
2000 m.Samples were obtained using:(1)a commercial fishing net(Otter bottom trawl,OTB)with a cod-end of 12 mm stretch mesh on
board fishing vessels and(2) a modified commercial fishing net Otter Trawl Maireta System withthe
same cod-end mesh size used,on board the research vessel.