fish screen
31electric screen — a series of electrodes strung across a waterway to prevent passage of fish, to direct fish into a trap or into a fish pass …
32artificial fish — simulated fish for use in computer graphics such as screen savers, behaviour based 3D animation, virtual aquaria, virtual reality, etc …
33submersible traveling screen — a wire mesh screen that acts like a conveyor belt when installed in the intakes of turbines at dams guiding and transporting juvenile fish into bypass channels …
34Whaling — Eighteenth century engraving showing Dutch whalers hunting bowhead whales in the Arctic …
35filtering mat — a grating screen of fish screen (2) (q.v.) built on a slant into a river bed. Fences or netting direct fish onto the screen and the fish run aground on it while the water falls through the screen grating …
36Fishery — See also: fishing and fishing industry A salmon fishery with salmon spawning within the Becharof Wilderness in southern Alaska. Generally, a fishery is an entity engaged in raising and/or harvesting fish, which is determined by some… …
37Overfishing — Atlantic cod stocks were severely overfished in the 1970s and 1980s, leading to their abrupt collapse in 1992 Overfishing …
38Common Fisheries Policy — The Common Fisheries Policy (CFP) is the fisheries policy of the European Union (EU). It sets quotas for which member states are allowed to catch what amounts of each type of fish, as well as encouraging the fishing industry by various market… …
39Cod fisheries — Atlantic cod Pacific cod Cod f …
40Marine biology — Only 29 percent of the world surface is land. The rest is ocean, home to the marine lifeforms. The oceans average four kilometers in depth and are fringed with coastlines that run for nearly 380,000 kilometres. Marine biology is the scientific… …
