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Page 5 - ஹாட்ஃபீல்ட் கடல் அறிவியல் மையம் News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Sightings of juvenile great white sharks increase off California coastline

California State Parks did not immediately respond to Fox News request for comment on the incident. The May 7 issue of Del Mar City Hall s Del Mar Weekly – a city around half an hour away – said lifeguards and researchers in the area had been monitoring the influx, tagging sharks, gathering data from underwater receiver buoys and studying aerial images from a drone. The publication said that Cal State University Long Beach Shark Lab s Chris Lowe told officials that new data showed the numbers of white sharks have been dramatically increasing over the past decade. The waters off Southern California are a nursery for white sharks, Del Mar Weekly explained. Once hatched, baby sharks must fend for themselves. Stingrays which also gathered in great numbers last summer in Del Mar provide an accessible food source.

White shark population is small but healthy off the coast of Central California, study finds

NEWPORT, Ore. – The population of white sharks that call the Central California coast their primary home is holding steady at about 300 animals and shows some signs of growth, a new long-term study of the species has shown. Between 2011 and 2018, researchers were able to identify hundreds of individual adult and subadult white sharks, which are not fully mature but are old enough to prey on marine mammals. They used that information to develop estimates of the sharks’ abundance. “The finding, a result of eight years of photographing and identifying individual sharks in the group, is an important indicator of the overall health of the marine environment in which the sharks live,” said Taylor Chapple of the Coastal Oregon Marine Experiment Station at Oregon State University’s Hatfield Marine Science Center and a co-author of the study.

Great white shark population along California coast booming

Great white shark population along California coast booming By Julia Musto Stanford University, the Monterey Bay Aquarium and Oregon State University s Hatfield Marine Science Center found that between 2011 and 2018 great white shark numbers in the area had notably risen. Over a period of more than 2,500 hours of observation at three sites – Southeast Farallon Island, Año Nuevo Island and Tomales Point – Comparatively, a 2011 three-year study found just 219 sharks, suggesting the shift. Although the group found both male and female sharks, the estimate of the adult female population showed just around 60 in the region. Underwater video recordings and photographs helped to collect the data and a seal decoy was used to lure the apex predators.

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