Amazing Biggest Gill net Fishing Line Catch Giant Fish - Awesome big catching on the sea

Gillnetting is a fishing method that uses gillnets, vertical panels of netting that hang from a line of regularly spaced floaters that hold the line on the surface of the water. Traditionally this line has been weighted with lead and may be referred to as lead line. A gillnet is normally set in a straight line. Gillnets can be characterized by mesh size, as well as color and type of filament from which they are made. Fish may be caught by gillnets in three ways. Wedged, held by the mesh around the body. Gilled, held by mesh slipping behind the opercula. Tangled, held by teeth, spines, maxillaries, or other protrusions without the body penetrating the mesh. Most often fish are gilled. A fish swims into a net and passes only part way through the mesh. When it struggles to free itself, the twine slips behind the gill cover and prevents escape. Gillnets are so effective that their use is closely monitored and regulated by fisheries management and enforcement agencies. Mesh size, twine strength, as well as net length and depth are all closely regulated to reduce bycatch of non-target species. Gillnets have a high degree of size selectivity. Most salmon fisheries in particular have an extremely low incidence of catching non-target species. By altering the ratio of floats to weights, buoyancy changes, and the net can therefore be set to fish at any depth in the water column. In commercial fisheries, the meshes of a gillnet are uniform in size and shape. Fish smaller than the mesh of the net pass through unhindered, while those too large to push their heads through the meshes as far as their gills are not retained. This gives gillnets the ability to target a specific size of fish, unlike other net gears such as trawls, in which smaller fish pass through the meshes and all larger fish are captured in the net. Native fishers in the Pacific Northwest, Canada, and Alaska still commonly use gillnets in their fisheries for salmon and steelhead. Gillnets existed in ancient times, as archaeological evidence from the Middle East demonstrates. In North America, Native American fishermen used cedar canoes and natural fiber nets, for example, made with nettles or the inner bark of cedar. They would attach stones to the bottom of the nets as weights and pieces of wood to the top to use as floats. This allowed the net to suspend straight up and down in the water. Each net would be suspended either from shore or between two boats. Both drift gillnets and setnets have long been used by cultures around the world. There is evidence of fisheries exploitation, including gillnetting, going far back in Japanese history, with many specific details available from the Edo period, 1603-1868. The target species of gillnets are salmon, herring, tuna, mullet, and groundfish like haddock, flounder, pollock. The introduction of fine synthetic fibers such as nylon in the construction of fishing gear during the 1960s marked an expansion in the commercial use of gillnets. The new materials were cheaper and easier to handle, lasted longer and required less maintenance than natural fibers. In addition, multi-filament nylon become almost invisible in water, so nets made with synthetic twines generally caught greater numbers of fish than natural fiber nets used in comparable situations. On small boats gillnets are handled by hand. Larger boats use hydraulic net haulers or net drums. Set gillnets are widely used all over the world and are employed both in inland and sea waters. They are popular with artisanal fisheries because no specialized gear is needed, and it is low-cost based. Gillnets are sometimes a controversial gear type especially among sport fishers who argue they are inappropriate especially for salmon fisheries. These arguments are often related to allocation issues between commercial and recreational fisheries and not conservation issues. Most salmon fisheries, especially those targeting Pacific salmon in North America, are strictly managed to minimize total impacts to specific populations, and salmon fishery managers continue to allow the use of gillnets in these fisheries. Gillnets are also used out in the deep sea for fisheries whose primary catch is swordfish. California driftnet fisheries have some of the highest rates of bycatch with 12% of the catch being the targeted swordfish while up to 68% of the catch being bycatch that will be tossed back to sea. Many types of gillnets are used by fisheries scientists to monitor fish populations. Vertical gillnets are designed to allow scientists to determine the depth distribution of the captured fish.