This Measure of the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR), adopted in accordance with Conservation Measure 31-01, and in case it is invoked by the conservation measures to which it is attached, prescribes rules for reporting of fine-scale length composition data by Contracting Parties. At the end of each month each Contracting Party shall obtain from each of its vessels representative samples of length composition measurements of the target species and by-