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Seine nets can be deployed from the shore as a beach seine, or from a boat. Boats deploying seine nets are known as seiners. Two main types of seine net are deployed from seiners: purse seines and Danish seines. A seine differs from a gillnet, in that a seine encloses fish, where a gillnet directly snares fish.
The purse seine is an example of a surrounding net. Here any salmon swimming near the surface are surrounded with a wall of netting, supported by floats. A surrounding net is a fishing net which surrounds fish and other aquatic animals on the sides and underneath. It is typically used by commercial fishers, and pulled along the surface of the ...
Seine fishing industries rapidly recognized the value of the power block, and by 1960, most northern seine vessels were using the power block. Nowadays power blocks come with dozens of configurations and sizes. They are installed on over twenty thousand fishing vessels across the major purse seining fisheries around the world. [5]
The purse seine, widely used by commercial fishermen, is an evolution of the surround net, which in turn is an evolution of the seine net. A large net is used to surround fish, typically an entire fish school, on all sides. The bottom of the net is then closed by pulling a line arranged like a drawstring used to close the mouth of a purse.
The seine boat drags the warps and the net in a circle around the fish. The motion of the warps herds the fish into the central net. Danish seining works best on demersal fish which are either scattered on or close to the bottom of the sea, or are aggregated (schooling). See also purse seine.
They are harvested using handline fishing, surface trolling, or small-scale purse seining. They are traditionally used to catch pelagic fish (like tuna, mackerel scad, and kawakawa). Payaos can produce catches of up to 200 metric tons of fish. There are thousands of payao anchored in dense networks throughout the Philippines.
Both menhaden fisheries use a process known as purse seine fishing, in which two fishing boats surround a single school of fish with a large net. Purse seining is one of the most efficient methods of fishing available, with one of the lowest levels of bycatch. [19]
A purse seiner is a fishing vessel which uses a traditional method of catching tuna and other school fish species. A large net is set in a circle around a school of fish while on the surface. The net is then pursed, closing the bottom of the net, then pulling up the net until the fish are caught alongside the vessel.