Typically the vessel then steams back to where the tow was started, lowers the net and begins towing anew. Regulation of the groundfish industry involves licensing, species quotas, seasonal closures, designated fishing areas, mesh size of nets, dockside monitoring and observer programs. A prized sport fish salmon in fresh water are caught in gill nets or fly fishing, however, the rivers in the Bay of Fundy are closed because of low returns of spawning salmon. Typically this takes approximately 18 months. The salmon are fed a specially formulated diet for optimum growth.
Atlantic salmon is marketed as fresh fish but some is now being canned.
Because of the salmon's life history, smolts can be transferred from fresh water to salt water only at specific times of the year. Most are introduced in the spring when smolts would naturally be migrating to the sea, however, some are now added in the fall. A number of cage sites can be seen around the Grand Manan archipelago, including Dark Harbour, from Long Island to White Head and in Seal Cove Sound. The sites are composed of a number of sea cages in a buoyed grid system. Another net is stretched over the top of the cage, above water to keep birds away from the salmon.