The confluence of cold and warm currents can disturb the seawater, and the flooding seawater brings nutrients to the surface of the ocean, which makes plankton flourish, thus providing rich bait for fish and rich fishery resources. In addition, the confluence of cold and warm currents can create a "water barrier" to prevent fish from swimming, and it has become the largest fishing ground in the world because of the advanced technology of fishing industry and the developed aquaculture fishery in the country.
2. Newfoundland Fishing Ground, the ocean current from the Arctic Ocean southward along Labrador Peninsula is called Labrador Cold Current, which joins with the Gulf Warm Current near 40 north latitude in the southeast of Newfoundland Island, causing this sea area to be often foggy and warm water fish and cold water fish converge, forming a world-famous Newfoundland fishing ground.
3. Beihai Fishing Ground is located at the intersection of the North Atlantic warm current and the cold current from the Arctic. Cold and warm currents meet to produce upwelling. In the upwelling area, seawater continuously rushes from the lower layer to the surface layer, and nutrients such as decomposed organic matter in the lower layer of seawater are also brought to the surface layer. Therefore, the water quality in this sea area is fertile, forming a high-yield fishing area in the North Sea.
4. The coast of Peru is in the southeast trade wind zone, and the southeast trade wind blows from the South American continent to the Pacific Ocean, so that the coastal surface seawater goes offshore, and the bottom seawater rises and supplements to form an ascending compensation current. The compensation current brings nutrients to the surface, and the surface seawater flows northward under the action of wind, while the seawater flowing away from the original sea area is supplemented by deep seawater, which turns up, bringing rich nutrients to the seabed, and plankton proliferates in large numbers, providing sufficient bait for fish and shrimp.
Extended data:
Newfoundland Fishing Ground, located along the coast of Newfoundland Island, was once one of the four largest fishing grounds in the world. 1534 was accidentally discovered by John Capote, a western European navigator, while searching for the Northwest Passage. Unusually rich fishery output has the reputation of "stepping on the back of cod can land". However, after centuries of wanton fishing, especially after large mechanized trawlers began to operate in fishing grounds in the 1950s and 1960s, Newfoundland fishing grounds gradually disappeared and disappeared after 1990s. However, it is still marked as one of the world-famous fishing grounds in China's geography textbooks.
Baidu encyclopedia-the world's four major fishing grounds
Baidu Encyclopedia-Hokkaido Fishing Ground
Baidu Encyclopedia-Newfoundland Fishing Ground
Baidu Encyclopedia-Beihai Fishing Ground
Baidu Encyclopedia-Peru Fishing Ground