Warmer water drives record stingray attacks on California beaches
More than 3,100 stingray attacks have been recorded on Southern California beaches since the beginning of 2026, with alarming numbers in the Bolsa Chica and Huntington regions of Orange County. The scenario, which has already exceeded twice the forecast for the entirety of last year, raises a warning for swimmers and authorities on the west coast of the United States. The situation was disclosed on August 15, 2026.
Worrying increase in incidents in coastal areas
California beaches are facing a sharp increase in incidents involving stingrays. In Bolsa Chica and Huntington alone, occurrences exceeded 3,100 cases. In the city of San Diego, lifeguards have counted around 1,000 people struck by stingray stingers this year, a number that exceeds that recorded in any first half of the last five years. This scenario raises concerns about safety in coastal waters.
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Rising ocean temperatures attract stingrays to the coast
Experts point out that the main factor behind the increase in attacks is the warming of the Pacific Ocean. High temperatures create more favorable conditions for stingrays to approach shallow waters, precisely where bathers tend to frequent. Bryan R. Etnyre, superintendent of state parks in north Orange County, said temperatures have consistently stayed in the 50s.
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He also said that there was not a single week throughout the winter in which the water temperature fell below 15°C this year, which directly contributes to the greater presence of these animals in the bathing areas.
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Impact of El Niño and the geographic expansion of species
The combination of warmer waters, enhanced by conditions associated with the El Niño phenomenon, is causing a greater number of stingrays to move to the Californian coast, coming from regions further south. Chris Lowe, a professor of marine biology at California State University, Long Beach, explained that stingrays are originally a subtropical species. However, they are finding ideal conditions to thrive and expand their geographic range due to climate change.
Lowe highlighted that, during El Niño, there is a greater flow of these animals coming from the south, which brings them closer to the coast. Therefore, researchers expect a record number of cases in 2026.
Why do stingrays concentrate in shallow waters
The stingrays that inhabit the coastal region have a habit of remaining partially buried in the sand, especially in warm, shallow waters. This behavior creates a dangerous interaction with swimmers, as more animals and more people share the same space. Professor Chris Lowe illustrated the situation by commenting that there may be so many stingrays in some parts of the beach that you cannot see the sand at the bottom of the sea.
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Fewer predators and the population dynamics of stingrays
Another factor that may be contributing to the growth of the stingray population is the decrease in their natural predators. Animals such as certain species of sharks, sea lions and giant groupers, which feed on rays, would be exerting less pressure on them. This reduction in predation favors an increase in the number of individuals of the species, intensifying its presence in coastal areas.
Safety tips for swimmers
With the increase in attacks, prevention is essential for those who visit California beaches. To avoid incidents, follow these recommendations:
- Dragging your feet:When entering the water, dragging your feet on the beach floor, rather than stepping hard, helps scare away stingrays that may be buried in the sand.
- Attention in shallow waters:Pay extra attention in areas of warm, shallow waters, where stingrays tend to concentrate.
- Signaling:Respect the lifeguard signs and the areas indicated as being at greatest risk.
- In case of attack:Seek medical attention immediately. The stingray’s sting can cause intense pain and, in some cases, more serious reactions.
