I recently posted a blog about young great white sharks taking roost in Monterrey Bay. In the blog is a phrase “White Shark Cafe.” My curiosity. knowing no bounds. wanted to know more.
This (edited) page from the Schmidt Ocean Institute provided me with part of the answer:
“The white shark is among the most iconic predators in the ocean. But for all their public exposure, the lives of white sharks remain shrouded in mystery. Their remarkable migrations and behaviors have come to light in the past decade, through the use of biologging tags. These sophisticated tags – think “wearables” for sharks – allow scientists to see beyond surface encounters or the brief interactions divers and fishermen have with white sharks. The tags allow researchers to follow the sharks as they journey, traveling thousands of miles into the open ocean, then returning each year to their coastal feeding grounds.”
This comes from Wiki:
The White Shark Café is a remote mid-Pacific Ocean area noted as a winter and spring habitat of otherwise coastal great white sharks. The area, halfway between Baja California and Hawaii, received its unofficial name in 2002 from researchers at Stanford University’s Hopkins Marine Station who were studying the great white shark species using satellite trackingtags. They identified a zone with a radius of approximately 160 miles. The findings, which were initially published in the January 3, 2002 issue of the journal Nature, showed three of four tagged sharks traveled to the Café during a six-month period after they were tagged off the central coast of California.
Although the area had not previously been suspected as a shark habitat, when mapping the satellite tracking data, researchers discovered that members of the species frequently travel to and loiter in the area. It was once believed the area had very little food for the animals (researchers described it as the shark equivalent of a desert), but research in early 2018 by the vessel Falkor showed that there is a rich and diverse food chain too deep to be detected by satellites that provides a potentially abundant food supply for the sharks. Male, female, and juvenile great whites have been tracked there.
The sharks tracked to the area came from diverse rookeries along the North American coast. They typically took up to 100 days to arrive, traveling around 3.3 ft/s, during which they make periodic dives as deep as 3,000 feet. While at the Café, they dive to depths of 1,500 feet as often as once every ten minutes. By 2006, researchers had observed consistent migration and other behavior. Tracking data indicates that white sharks will leave feeding grounds near the coast in winter, travel to the Café, and some may even summer near Hawaii. But many linger in the Café, often for months, before returning to the coast in the fall, coinciding with the elephant seal breeding season (a favored prey).