{"id":549332,"date":"2026-07-14T14:31:17","date_gmt":"2026-07-14T14:31:17","guid":{"rendered":"https:\/\/www.newsbeep.com\/ie\/549332\/"},"modified":"2026-07-14T14:31:17","modified_gmt":"2026-07-14T14:31:17","slug":"california-faces-highest-shark-numbers-in-years-as-great-whites-head-north-sharks","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/ie\/549332\/","title":{"rendered":"California faces highest shark numbers in years as great whites head north | Sharks"},"content":{"rendered":"<p class=\"dcr-1s160rg\">California is set to see one of its sharkiest summers in a decade, with large numbers of juvenile great whites already on a reverse vacation from the warm waters of Mexico to cooler pastures along the western United States.<\/p>\n<p>Chris Lowe. Photograph: CSULB Shark Lab<\/p>\n<p class=\"dcr-1s160rg\">The marine predator has become more common along the west coast in recent years, with stories of<a href=\"https:\/\/www.latimes.com\/california\/story\/2026-03-26\/8-foot-shark-circles-newport-beach-surfer-very-sharky-summer-ahead\" data-link-name=\"in body link\" rel=\"nofollow noopener\" target=\"_blank\"> surfers seeing underwater behemoths<\/a> closer to shore and scientists saying swimmers and ocean-lovers alike are probably already sharing their favorite beaches with great whites, whether they know it or not.<\/p>\n<p class=\"dcr-1s160rg\">\u201cWe\u2019re already seeing a high number of white sharks,\u201d said Dr Chris Lowe, the director of the Shark Lab at California State University Long Beach. \u201cWe started seeing baby white sharks in February, which we\u2019ve never seen before. Usually that happens in April.\u201d<\/p>\n<p class=\"dcr-1s160rg\">There\u2019s one major reason why: El Ni\u00f1o. Forecasters at the National Oceanic and Atmospheric Administration (Noaa) confirmed the formation of the climate phenomenon in the Pacific in early June. El Ni\u00f1o can cause worldwide impacts, including heatwaves, drought, heavy rainfall and extreme weather, and science agencies have said this year\u2019s <a href=\"https:\/\/www.reuters.com\/business\/environment\/australia-weather-bureau-says-el-nino-event-underway-tropical-pacific-2026-06-16\/\" data-link-name=\"in body link\" rel=\"nofollow noopener\" target=\"_blank\">could be incredibly strong<\/a>.<\/p>\n<p class=\"dcr-1s160rg\">For fish and ocean life, sharks included,<a href=\"https:\/\/www.noaa.gov\/news-release\/el-nino-forms-expected-to-strengthen-say-noaa-forecasters\" data-link-name=\"in body link\" rel=\"nofollow noopener\" target=\"_blank\"> warmer oceans can cause mass migrations<\/a> with cold water species moving from their usual ranges further north, or into deeper waters.<\/p>\n<p class=\"dcr-1s160rg\">\u201cEvery El Ni\u00f1o is not the same; each one is unique with its own imprint on our weather,\u201d Ken Graham, the director of Noaa\u2019s National Weather Service, said last month.<\/p>\n<p>It gets too warm and the \u2018white sharks don\u2019t like it\u2019<\/p>\n<p class=\"dcr-1s160rg\">Lowe said the last time conditions seemed to match those that are forming in the Pacific, it was a sharky time for California.<\/p>\n<p class=\"dcr-1s160rg\">His team at the CSULB Shark Lab have been tagging and tracking juvenile great whites for 20 years. In 2015 \u2013 an El Ni\u00f1o year that coincided with a marine heatwave<a href=\"https:\/\/www.fisheries.noaa.gov\/feature-story\/7-ways-el-nino-and-large-marine-heatwave-could-affect-west-coast-marine-species\" data-link-name=\"in body link\" rel=\"nofollow noopener\" target=\"_blank\"> known as the \u201cBlob\u201d<\/a> \u2013 the lab saw \u201ctwice as many white sharks\u201d along the California coast \u201cand we couldn\u2019t figure out why\u201d. A few years later, on a trip to Baja California, a known white shark nursery, Lowe heard that fishers had seen almost no sharks in Mexico\u2019s waters that summer.<\/p>\n<p class=\"dcr-1s160rg\">\u201cWhen we have these El Ni\u00f1o conditions, it gets too warm, and the white sharks don\u2019t like it,\u201d Lowe said. \u201cAnd it pushes them into California.\u201d<\/p>\n<p>Cal State Long Beach\u2019s Shark Beach Safety Team. Photograph: Sean DuFrene\/CSULB Shark Lab<\/p>\n<p class=\"dcr-1s160rg\">Adult white sharks are called great for a reason: they\u2019re massive. Full-grown specimens range in size from 10 to 20ft in length. But most of those off California\u2019s coastline are juveniles.<\/p>\n<p class=\"dcr-1s160rg\">White sharks are born as live young at about 5ft in length. A juvenile is classified as any shark between 6ft and 9ft from snout to tail. The younger sharks spend much of their time closer to shore migrating between areas with shallower waters, where ample food is available. Stingrays, fish and squid are all on the menu.<\/p>\n<p class=\"dcr-1s160rg\">Lowe says California waters will probably host a few more visitors than just white sharks while the water\u2019s warm, too.<\/p>\n<p>A shark being tagged. Photograph: CSULB Shark Lab<\/p>\n<p class=\"dcr-1s160rg\">In 2015, a big influx of smooth hammerhead sharks came up from Baja California, following schools of mahi mahi. Whole suites of subtropical species \u2013 the food source for great whites \u2013 replaced the usual populations of squid, anchovies and sardines and provided an El Ni\u00f1o buffet just off the coast of southern California.<\/p>\n<p class=\"dcr-1s160rg\">\u201cI expect any day we\u2019re going to start seeing hammerheads,\u201d Lowe said, adding he wouldn\u2019t be surprised to also see some bull sharks and tiger sharks in the fray.<\/p>\n<p>Wildlife officials move to limit interactions between humans and sharks<\/p>\n<p class=\"dcr-1s160rg\">Local officials have already taken measures to protect both sharks and beachgoers. The California department of fish and wildlife said it was \u201canticipating a larger presence of white sharks\u201d. The body<a href=\"https:\/\/wildlife.ca.gov\/News\/Archive\/california-fish-and-game-commission-takes-emergency-action-to-prevent-white-shark-take-and-reduce-potential-interactions-between-hooked-sharks-and-swimmers\" data-link-name=\"in body link\" rel=\"nofollow noopener\" target=\"_blank\"> passed emergency regulations last month<\/a> to prohibit the use of certain fishing gear at beaches and on piers to limit any accidental hooking of white sharks.<\/p>\n<p class=\"dcr-1s160rg\">The species are fully protected in California and<a href=\"https:\/\/wildlife.ca.gov\/Conservation\/Marine\/White-Shark#643032337-is-it-legal-to-catch-white-sharks\" data-link-name=\"in body link\" rel=\"nofollow noopener\" target=\"_blank\"> it\u2019s illegal to catch them<\/a>.<\/p>\n<p class=\"dcr-1s160rg\">But John Ugoretz, a pelagic fisheries and ecosystems program manager at the state\u2019s fish and wildlife department, said that hasn\u2019t stopped people from trying. Modern fishing equipment presents a major danger to swimmers and surfers, with a powerful shark snared on a metallic line creating the potential to \u201cbecome like a cheese cutter\u201d that could decapitate a person, Lowe says.<\/p>\n<p class=\"dcr-1s160rg\">\u201cWhat we\u2019ve seen already this year is a pretty significant increase in people interacting with those white sharks in southern California in particular,\u201d Ugoretz said. \u201cThat includes people fishing for white sharks.\u201d<\/p>\n<p><a data-ignore=\"global-link-styling\" href=\"#EmailSignup-skip-link-23\" class=\"dcr-76akua\">skip past newsletter promotion<\/a><\/p>\n<p class=\"dcr-vf9hps\">Sign up to Down to Earth<\/p>\n<p class=\"dcr-1r7my33\">The planet&#8217;s most important stories. Get all the week&#8217;s environment news &#8211; the good, the bad and the essential<\/p>\n<p><img src=\"https:\/\/www.newsbeep.com\/ie\/wp-content\/uploads\/2026\/07\/1784039477_634_500.jpg\" alt=\"\" loading=\"lazy\" decoding=\"async\" class=\"dcr-xiq31o\"\/><\/p>\n<p id=\"EmailSignup-skip-link-23\" tabindex=\"0\" aria-label=\"after newsletter promotion\" role=\"note\" class=\"dcr-76akua\">after newsletter promotion<\/p>\n<p>Sharks have largely learned that people are not food.  Photograph: Sean DuFrene\/CSULB Shark Lab<\/p>\n<p class=\"dcr-1s160rg\">He added California had seen \u201caggregations\u201d of white sharks regularly, but in El Ni\u00f1o years those aggregations are bigger, move further north towards Santa Cruz and Monterey Bay, and stay later into the year.<\/p>\n<p class=\"dcr-1s160rg\">\u201cConservation measures for sharks in California have already been successful, and we\u2019re already seeing increases [in populations],\u201d Ugoretz said. \u201cWe\u2019re just very concerned with the potential, not only for additional sharks being caught and killed, but also the potential for a hooked shark to wrap the line around a swimmer, or even in a worse case, biting someone while it\u2019s fighting on that line.\u201d<\/p>\n<p class=\"dcr-1s160rg\">Both Lowe and Ugoretz stressed that shark bites remain a rarity in California, and fatal ones even more so. There have<a href=\"https:\/\/wildlife.ca.gov\/Conservation\/Marine\/White-Shark#643032344-are-white-sharks-endangered-in-california\" data-link-name=\"in body link\" rel=\"nofollow noopener\" target=\"_blank\"> been fewer than 250 shark incidents<\/a> in the state since 1950 across all shark species, and just 17 of those were fatal. More than 85% of those 250 incidents, however, involved white sharks.<\/p>\n<p class=\"dcr-1s160rg\">At the same time, white shark populations have increased due to widespread conservation measures.<\/p>\n<p class=\"dcr-1s160rg\">\u201cWe always assumed that the more sharks and the more people you put together, the higher the likelihood of bites,\u201d Lowe said. \u201cBut what we\u2019re seeing in California is actually the opposite.\u201d<\/p>\n<p>A great white shark. Photograph: CSULB Shark Lab<\/p>\n<p class=\"dcr-1s160rg\">\u201cThese sharks are around so many people, and they recognize that we\u2019re not prey.\u201d<\/p>\n<p class=\"dcr-1s160rg\">Ugoretz said beachgoers should take comfort knowing that a sighting of a white shark remains a rare experience, like seeing a mountain lion or a bear on a hike. Caution is needed, but you\u2019re in their territory.<\/p>\n<p class=\"dcr-1s160rg\">\u201cThe one thing I always tell people about the ocean is: when you go into the wildness you might encounter a wild animal, just like when you go into a forest and maybe see a bear,\u201d he said. \u201cIf you do, you\u2019re probably lucky because you\u2019re seeing them at all. It\u2019s part of the diversity of the marine environment.\u201d<\/p>\n<p class=\"dcr-1s160rg\">Lowe said if you asked him if the beaches were safe from shark incidents 10 or 15 years ago, he wouldn\u2019t have given you the same answer he does now.<\/p>\n<p class=\"dcr-1s160rg\">\u201cWhen I first started this work, lifeguards would ask me this exact same question: is it safe to be in the water with them?\u201d he said. \u201cAnd to be honest, we did not know.\u201d<\/p>\n<p class=\"dcr-1s160rg\">Now, he said, the Shark Lab\u2019s research shows white sharks are intelligent, apex predators for a reason, and they largely know humans are not dinner.<\/p>\n<p class=\"dcr-1s160rg\">\u201cFlash forward 20 years later, based on all our drone data, I swim with these white sharks every day, and I have no qualms doing it,\u201d Lowe said. \u201cHow do we explain the fact that people are around white sharks every day, some 9-, 10-, 12-, 14-feet long, and are not being bitten? They\u2019ve learned that we\u2019re not food.\u201d<\/p>\n<p class=\"dcr-1s160rg\">Obviously incidents do happen, and Lowe said it was unclear why sharks occasionally bite people. The most common go-to explanation is mistaken identity, possibly with sharks that haven\u2019t been around many people. But they are extremely uncommon when you consider the number of sharks in the water and the amount of people on a hot summer\u2019s day.<\/p>\n<p class=\"dcr-1s160rg\">\u201cAs I\u2019m speaking to you, a white shark is swimming by a surfer or swimmer who doesn\u2019t know the shark is there.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"California is set to see one of its sharkiest summers in a decade, with large numbers of juvenile&hellip;\n","protected":false},"author":2,"featured_media":549333,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[61,60,82,263],"class_list":["post-549332","post","type-post","status-publish","format-standard","has-post-thumbnail","category-wildlife","tag-ie","tag-ireland","tag-science","tag-wildlife"],"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/posts\/549332","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/comments?post=549332"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/posts\/549332\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/media\/549333"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/media?parent=549332"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/categories?post=549332"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/ie\/wp-json\/wp\/v2\/tags?post=549332"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}