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The nets can be flat or shaped like a bag, a rectangle, a pyramid, or a cone. Lift nets can be hand-operated, boat-operated, or shore-operated. They typically use bait or a light-source as a fish-attractor. [1] Lift nets are also sometimes called "dip nets", though that term applies more accurately to hand nets. [2]
Net haulers are usually used to set and haul driftnets, with a drifter capstan on the forepart of the vessel. In developing countries most nets are hauled by hand. The mesh size of the gillnets is very effective at selecting or regulating the size of fish caught. The drift net has a low fuel/fish energy consumption compared to other fishing gear.
Diagram of a tangle net shown upright for viewing. When used by fishermen in the Philippines it is positioned on the sea bottom against a near-vertical underwater cliff wall (drop-off zone). Similar to a gillnet , the tangle net , or tooth net , is a type of nylon fishing net .
The oldest known fishing net is the net of Antrea, found with other fishing equipment in the Karelian town of Antrea, Finland, in 1913. The net was made from willow, and dates back to 8300 BC. [1] Recently, fishing net sinkers from 27,000 BC were discovered in Korea, making them the oldest fishing implements discovered, to date, in the world. [2]
Tangkal or bintahan are large stationary lift nets. They use box-shaped nets and are operated from a bamboo platform built on the shoreline or out at sea. They typically use kerosene lamps placed above the center of the net as fish attractors. The nets are lifted by means of counterweights, with the fish collected by long hand nets.
In midwater trawling, a cone-shaped net can be towed behind a single boat and spread by trawl doors, or it can be towed behind two boats (pair trawling) which act as the spreading device. Midwater trawling catches pelagic fish such as anchovies , shrimp , tuna and mackerel , whereas bottom trawling targets both bottom living fish ( groundfish ...