Relacionar Columnas Fisheries & AquacultureVersión en línea Definition and methods por Paola Silva 1 Suspended culture 2 Purse seines 3 Open net pens 4 Beach and boat seines 5 6 Fisheries 7 8 Aquaculture 9 Longlines 10 Bag & rack Seine nets encircle and herd fish with a long wall of netting. The catch of unwanted species can be a conservation concern Bottom trawl The fish are surrounded by a large wall of net. When floating objects are used, the capture of vulnerable marine life can be a concern. Large-scale fish hunting, often using invasive techniques Fishing line and grapnel with multiple hooks. There's very little bycatch. Raising and harvesting of marine species in controlled environments