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SAN DIEGO - San Diego photographers are taking advantage of the serene and luminous glow of the surf this week.Eerie neon blue waves have been seen against San Diego's shore this week, creating some rare photo opportunities. The phenomenon is created when a red tide, which is algae bloom filled with phytoplankton called "dinoflagellates," rolls off waves onto or near the shoreline.The organisms react with a bioluminescent chemical reaction when jostled as a way to warn predators, to lure prey, or communicate within their species. The blue glow can be created by a simple step in the water or crash of a wave.IN SAN DIEGO...The current red tide is being caused by massive numbers of dinoflagellates including "Ceratium falcatiforme" and "Lingulodinium polyedra," according to the Scripps Institution of Oceanography at UC San Diego.The Scripps Institution of Oceanography at UC San Diego is not affiliated with The E.W. Scripps Co., the parent company of this station. Researchers do not know how long this current red tide will last or "the full spatial range of the bloom." In the past, blooms have lasted anywhere from a week to a month or more.San Diego's last red tide event in September 2013 lasted one week, while the previous one in October 2011 lasted a month, according to researchers. Previous ones have lasted even longer.Monday's event was captured from La Jolla to Encinitas. Scripps recommends viewing the marine event from a dark beach at least two hours after sunset, though visibility is not guaranteed.IS IT HARMFUL?...In some areas, a red tide can be toxic to local marine life. In California, the majority are not caused by species that produce toxins, such as domoic acid, according to researchers. However, it's still best to be cautious around the bloom.The Southern California Coastal Ocean Observing System at Scripps samples the water for potential harmful algal toxins weekly.Red tides are unpredictable events and do not always give off bioluminescence, Scripps said.BUT WHY IS IT RED?...The red coloration is due to the high number of organisms in the water. During the day, organisms will swim to the surface to soak in sunlight. Each cell contains a little sunscreen that gives off the color, according to Scripps.When these organisms gather at the surface for sunlight, they can create an especially intense red.Researchers say a combination of physical, chemical, and biological factors are the driving forces behind allowing red tides to form. 2586

SAN DIEGO (KGTV)-- Beginning Thursday, wearing masks has become a state mandate. A new study out of the University of California, San Diego, suggests the best way to curb the spread of coronavirus is by wearing a mask.In a UCSD campus-released article titled "To wear a mask or not, is not the question; Research indicates it's the answer," Chemistry Nobel Laureate and UCSD Professor Mario Molina shows the data does not lie."Let's work with the scientists," Molina said. "Let's work together with society!"RELATED: San Diego County exceeds community outbreak trigger, forcing pause on future reopeningsHe and a team of scientists at CALTECH and Texas A&M looked at the world's three COVID-19 epicenters: Wuhan, Italy, and New York City. They studied each area's attempts to mitigate the spread of COVID-19, including shelter in place, social distancing, and wearing facial coverings.Their study showed, in Wuhan, where mask-wearing is part of the culture, the spread was relatively slow. But in Italy, even after the lockdown, positive cases continued to climb. Additionally, despite the stay-at-home order in New York City, numbers continued to rise.A pivotal point of the study was when they looked at the numbers in Italy and New York after their respective mask mandates went into effect on April 6, 2020, and April 17, 2020. It was only then that the spread of viral air particles slowed drastically.RELATED: California requiring face coverings for most indoor areas"It changes. It's no longer straight. It goes downwards," Professor Molina said, referring to the curve on the bar graph.The professor reminds people that this does not mean to ignore all the other health measures."We are not saying using masks is the only thing that matters, no," Professor Molina said. "What we have in the paper is, everything is added to social distancing and to quarantine."RELATED: Mayor releases outdoor dining proposal in Little ItalyProfessor Molina says California's new facemask mandate is similar to government regulations on air pollution but on a much personal scale. In this case, you are the car, and COVID-19 is pollution. He says he is hopeful that with the mandate, the numbers in California will decline."We tell people, 'Hey, it's a good idea to wear face masks. You protect your family, and you protect yourself!'" Molina said.Molina says a secondary research paper analyzing mask mandates in different states will be published in the coming weeks. 2472

SAN DIEGO (KGTV)— In the wake of two serious e-scooter accidents over the weekend, San Diego city leaders are working to update e-scooter regulations. While the scooters are off-limits on all city sidewalks, they are allowed on beach boardwalks. While some believe they are instrumental in freeing up car traffic and parking, others believe scooters just bring the congestion straight onto the boardwalks.Chase McKenna enjoys riding e-scooters at Pacific Beach. He says it is the best way to enjoy the boardwalk."Cruise around the strip right here and that's fun,” McKenna said. “They're convenient because down here, they're everywhere."But what is fun and convenient for McKenna, is a total nightmare for Paul Thackery."PB's great. The scooters are out of control,” Thackery said. He says some areas along the boardwalk are beginning to look like a scooter graveyard. He has also been hit by several intoxicated scooterists in the last several months. "I can't stand them. I ride my bike down here every day, and scooters are in the way, it's dangerous,” Thackery said. “I think they should get rid of them all together. "This weekend alone, at least two e-scooterists in San Diego were sent to the hospital for severe injuries. San Diego Police said a 39-year-old man fell off a scooter just before 10 pm Saturday in Mission Beach. He suffered life-threatening head injuries. Then at 12:30 am Sunday, just a mile away, a 62-year-old man lost control of his scooter, and crashed into a sidewalk. He suffered a neck fracture and facial abrasions.Since February 2018, two people in San Diego County have even died in scooter crashes. The city of San Diego is now defending against four e-scooter lawsuits that claim the city needed to enforce stronger regulations to prevent collisions and accidents.But in a crowded place like a boardwalk, McKenna says scooters are not the only issue."A person on their bicycle can be just as inconsiderate,” McKenna said. That is why McKenna says it is vital that each rider regulates themselves. We met Tracy Grimmett, a visitor from Modesto, doing a few practice laps before taking off for the first time. “Yes, without running into all the people around here. Yes, trying!” she laughed. She hopes to have fun while being considerate, as they share the busy boardwalk with thousands of weekenders."Be courteous around people, go slow,” McKenna said. “If there's a lot of people, you have to slow down, and you have to give other people the right of way."The city of San Diego is now considering making companies install “geo-fencing” on the scooters. That would automatically slow down the maximum speed of the scooters to 8mph in designated zones, including Mission Beach and Pacific Beach boardwalks. 2750

SAN DIEGO (KGTV)- There's a new requirement that large California counties have to meet before they can advance on the state's color-coded COVID-19 reopening system.State health officials say the "health equity metric" will help reduce infection rates among vulnerable populations.Sunday, San Diego County health officials opened another drive up testing site in Chula Vista. Local leaders say they've been targeting disadvantaged communities with education, outreach, and testing since the start of the pandemic."About 34% of our county population is Latino, but about 66% of the cases, we saw that early on, and that's why we took the action of developing the South Bay Saturation Strategy for testing. We have sites in every community in the South Bay," said Nick Macchione, director of the Health and Human Services Agency for San Diego County.Counties with more than 106,000 residents will be divided into quartiles based on income, education, and other factors gathered in census tracts.The goal is to bring the infection rates in the most disadvantaged neighborhoods in line with the county's overall rate."Now they need to make sure that not only does their test positivity for the whole county, their adjusted case rate, but also their test positivity in the lowest quartile in the Healthy Places Index for the county all need to meet the criteria for the least restrictive tier," said Dr. Mark Ghaly, California's health secretary.Ghaly said counties will need to show that they're directing money and resources to help the communities hardest hit."It's not just the test positivity, that's the piece that helps counties move forward or slows them down in moving through the tier system, but we are working with counties on a broader strategy to focus on equity," said Ghaly.Ghaly said failing to meet the metric cannot push a county back into a more restrictive tier, but can slow it down from moving ahead.Nancy Maldonado is the President and CEO of the Chicano Federation. She welcomes the additional metric."I do think it's a good thing because I think it places emphasis on the importance of taking care of our community and taking care of our essential workers who are disproportionately communities of color," said Maldonado.Some fear it's yet another hurdle to reopening.County Supervisor Jim Desmond took to Twitter, saying if the governor wants to help disadvantaged communities, he should let them get back to work."I think it's really ironic the governor keeps those businesses and lower income folks out of jobs, and now he wants a metric to make sure we're taking care of them," said Desmond.San Diego county remains in the red tier, which is one tier away from the most restrictive purple tier. 2727

SAN DIEGO, Calif (KGTV) - New recommendations aim to help the thousands of teenagers living with depression who are suffering in silence. The American Academy of Pediatrics released new guidelines for primary care doctors to screen young people. They say 2 out of 3 depressed teens are not being identified by their doctors and not getting the care they need. One survey doctors can give to patients is just two questions, another is nine. The purpose is not to establish a final diagnosis but rather screen for depression in a "first step" approach. San Diego Pediatrician Jaime Friedman believes it's a positive step to help young people and that it will be fairly easy to incorporate into visits. She will soon be using tablets on which parents and teens can answer questions related to their visit, they'll also be able to conduct the depression screening on them. Doctors are also being advised to talk to families about safety plans, removing lethal medications or guns from the home to prevent suicide. The AAP recommends young people get screened at least once a year starting at age 12.  1144

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