Language: French
The guide describes over five hundred species of invertebrates likely to be picked up by a trawler. Broken down into eight divisions, these species belong mainly to the groups of crustacea (prawns, hermit crabs, galatheids and crabs), molluscs (gasteropods, bivalves, cephalopods) and echinoderms (starfish, sea urchins, sea cucumbers). Data sheets have supplementary boxes giving the characteristics of species of the same genus.