White Shark Café

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Location of the White Shark Café in the Pacific Ocean
White shark

As White Shark Café a remote area in the central Pacific Ocean is known that in the winter and spring of many white sharks is sought that would otherwise reside in coastal areas.

description

The area, halfway between Baja California and Hawaii , was given its unofficial name in 2002 by researchers at Stanford University's Hopkins Marine Station, who studied great white shark species using data from satellite positioning . They identified a zone approximately 500 kilometers in diameter, centered at coordinates 23.37 ° N and 132.71 ° W. The results were originally published in the January 3, 2002 issue of the journal Nature . They showed that three out of four tagged sharks on the California coast visited the White Shark Café over a six-month period . While the area had not previously been known to be a great white shark habitat, when the researchers mapped the tracking data, they found that members of the species frequently visited the area and stayed there for a period of time. Before that, it was assumed that the area offered very little food for the animals. Subsequent investigations by the research vessel Falkor at the beginning of 2018 showed that there is a rich and varied food supply for sharks in the deeper water layers .

The sharks studied came from different populations along the North American coast. The trip to the White Shark Café typically took up to 100 days, with the sharks moving at an average speed of one meter per second. During this hike, they regularly dived to depths of up to about 900 meters. During their stay in the Shark Café , the sharks dived to a depth of 460 meters approximately every ten minutes. Many sharks often stayed in this area for months before returning to the California coast in the fall, as many seal species give birth there in the fall months , which are the preferred prey of the great white shark.

Web links

Individual evidence

  1. ↑ a b c S. J. Jorgensen, CA Reeb, TK Chapple, S. Anderson, C. Perle: Philopatry and Migration of Pacific White Sharks . In: Proceedings of the Royal Society B . 277, 2010, pp. 679-688. PMC 2842735 (free full text).
  2. ^ The Great White Way. In: Los Angeles Times. September 29, 2006, accessed July 23, 2020 .
  3. ↑ Great White Sharks Have A Secret 'Cafe,' And They Led Scientists Right To It. In: npr.org. May 28, 2018, accessed on July 23, 2020 .
  4. ↑ Between the nursery and “Café Hai”: Scientists are finding out more and more about the great white shark's private life. In: Neue Zürcher Zeitung. May 10, 2019, accessed July 23, 2020 .
  5. ↑ The mysterious reproduction of the great white shark. In: Der Spiegel. June 18, 2014, accessed August 18, 2020 .