From the first phases of the DOTT (reproduction, genetics, etc.) to the final stages in the processing plant, a number of tasks should, at least, be considered and studied from the engineering point of view. These include handling methods and techniques to keep the alive fish in good shape during catching, towing, farming, harvesting and post-harvesting operations; transport and offshore cages; mooring designs and monitoring methods for these systems; feeding controls; non-invasive fish size assessment methods; the removal of dead fish and feeding waste; killing cages and killing methods; systems to collect fertilized eggs; the use of land base facilities and processing methods together with installation, instrumentation and control systems.