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Tangle net
Similar to a gillnet, the tangle net, or tooth net, is a type of nylon fishing net. Left in the water for no more than two days, and allowing bycatch to be released alive, this net is considered to be less harmful that other nets. The tangle net is used in the Philippines by commercial fishermen, as well as by the scientific community. When spent, these nets can be bundled, and left on the sea floor to collect smaller species. These bundles are known locally as lumen lumen nets.
==Description and technique==
The tangle net originated in British Columbia, Canada, as a gear specifically developed for selective fisheries.〔Petrunia, William Mark (1997). "Tooth Net Fishery. Report on Scientific License 96.149." Jan. 5, 1997.〕 Tangle nets have smaller mesh sizes than standard gillnets. They are designed to catch fish by their nose or jaw, enabling bycatch to be resuscitated and released unharmed.〔Tangle net fishing on the Columbia River. http://www.salmonforall.org/tanglenet/〕〔FAO Gillnets and entangling net. http://www.fao.org/fishery/geartype/219/en〕 These nets are made with a very thin light nylon rope, have a small mesh and are strung between two ropes, a top rope with floats, and a bottom rope with weights. Dropped to the bottom of the ocean, located and retrieved through the use of a guide line and buoy, these nets have allowed both fishermen and scientists to reach areas not previously accessible. Tangle nets are generally left on the bottom for no more than a day or two so that the fish and bycatch does not die and spoil.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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