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The purse seine is a preferred technique for capturing fish species which school, or aggregate, close to the surface: sardines, mackerel, anchovies, herring, and certain species of tuna (schooling); and salmon soon before they swim up rivers and streams to spawn (aggregation). Boats equipped with purse seines are called purse seiners.
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 ...
A Colville Tribe biologist reports that during these two years the tribe harvested 3,163 hatchery Chinook while releasing 2,346 wild Chinook with only 1.4% direct or immediate mortality using purse seines, [35] whereas the tangle net was far less productive but had an approximate 12.5% mortality. Researchers commented that the use of recovery ...
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.
A tsunami is an unusual form of wave caused by an infrequent powerful event such as an underwater earthquake or landslide, a meteorite impact, a volcanic eruption or a collapse of land into the sea. These events can temporarily lift or lower the surface of the sea in the affected area, usually by a few feet.
Picture of a classical Greek athlete wearing the kynodesme (attributed to the Triptolemos painter, dating from about 480 BC) A kynodesmē (Greek: κυνοδέσμη, English translation: "dog tie") was a cord or string [1] or sometimes a leather strip that was worn primarily by athletes in Ancient Greece and Etruria to prevent the exposure of the glans penis in public (considered to be ill ...
The power of the purse is the ability of one group to control the actions of another group by withholding funding, or putting stipulations on the use of funds. The power of the purse can be used positively (e.g. awarding extra funding to programs that reach certain benchmarks) or negatively (e.g. removing funding for a department or program, effectively eliminating it).
The avoska was a major cultural phenomenon of Soviet daily life. Avoskas were manufactured using various kinds of strings. [citation needed] With the advent of synthetic materials, some of them were made of stretchable string, so that a very small net could be stretched to a very large sack.