The workshop referred closely to the results of a first workshop held in Bangkok in 2002 (The International Workshop on Factors Contributing to Unsustainability and Overexploitation in Fisheries) but aimed more specifically at answering the following three major questions: What are the major obstacles to the implementation of major legal instruments? What are the main lessons learned and the possible paths to solutions for improved implementation? What are the possible gaps that may exist in these instruments to guide the international community in improving the management of marine fisheries? The workshop was based on a review of eleven case studies, each relating to one of the following categories of fishery: large volume small pelagics; tuna and tuna-like species; large volume demersals; and coastal fisheries. This publication contains the report of the Workshop, discussion papers containing case studies and notes submitted by participants. The document, and in particular the conclusions adopted by workshop participants, will serve as a basis for further analytical work aimed at improved fisheries management and a more effective implementation of major international fisheries instruments.