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Scientists are exploring mysterious “blue holes” that form at the bottom of the ocean off Florida’s Gulf Coast.The blue holes are underwater sinkholes that vary in size, similar to sinkholes you can see on land, according to the National Oceanic and Atmospheric Administration. They are diverse biological communities full of marine life, like corals, sponges, mollusks, sea turtles, sharks, and more.“Underwater sink holes, springs, and caverns are karst (calcium carbonate rock) features that are scattered across Florida’s Gulf continental shelf,” said NOAA.NOAA says little is known about blue holes due to their lack of accessibility and unknown distribution and abundance. Openings can be several hundred feet underwater and many openings are pretty small.“In fact, the first reports of blue holes did not come from scientists or researchers, but actually came from fishermen and recreational divers,” wrote NOAA.Last year, a team of scientists explored one blue hole, called “Amberjack Hole,” about 30 miles off Sarasota’s shoreline. NOAA says the exploration of the hole was the team’s most detailed blue hole investigation to date. Divers and a “benthic lander” were deployed to the bottom, 350 feet down.NOAA says the team collected 17 water samples from just outside the hole down to the bottom and collected four sediment cores at the bottom. They also discovered two dead but intact smalltooth sawfish, an endangered species, at the bottom of the hole. One of the animals was recovered to undergo a necropsy.But next month, crews plan to explore an even bigger hole, called “Green Banana.”The rim of the “Green Banana” is 155 feet below the sea surface and the bottom is at a depth of approximately 425 feet, according to NOAA.“The configuration of the hole is somewhat hourglass shaped, creating new challenges for the lander deployment and water sampling,” said NOAA.From these missions, scientists are hoping to learn the following:Whether the submersed sinkholes are connected to Florida’s groundwater or if there is groundwater intrusion into the Gulf of MexicoIf a particular blue hole is secreting nutrients and thus affecting an area’s primary productionWhether microenvironments harbor unique or new species of microbesIf the Amberjack site should become a protected area 2301

SAN YSIDRO, Calif. (KGTV) -- The Department of Defense announced Monday that it plans to move an additional 300 troops to the California border, according to ABC News.The announcement was made after hundreds of migrants rushed the border in a show of force, causing the San Ysidro port of entry to close for hours.The troops were assigned to the Texas and Arizona borders, a spokesperson for US Northern Command tells ABC News.The decision was reached following an assessment by US Customs and Border Protection after the 500 migrants rushed the border.The majority of the 300 troops will be Military Police units as well as engineers. There are now 5,600 troops at the southern border in support of CBP, 1,800 of those are in California.Read the full statement from US Northern Command below:  812

SAN YSIDRO, Calif. (KGTV) - Hundreds gathered at a park in San Ysidro in support of the migrant caravan just hours before border officials closed the border.A group called the San Diego Migrant and Refugee Coalition organized the Sunday rally that eventually turned into a march. About 600 people joined the coalition which is made up of 20 migrant support and social justice groups. The organizers say they disagree with the militarization of the border and want the migrants to know they are loved and welcome. The march ended peacefully at the San Ysidro Port of Entry.  606

SAN YSIDRO (CNS) - A 68-year-old man was struck by an SUV and killed crossing a street outside of a crosswalk in San Ysidro, police said this morning.The accident occurred near a Shell gas station in the 300 block of East San Ysidro Boulevard near Border Village Road about 9:25 p.m. Friday, according to Officer Robert Heims of the San Diego Police Department.A 45-year-old woman driving a 2016 Dodge Journey made a left turn out of the gas station parking lot onto East San Ysidro Boulevard at the same time the man attempted to cross from the south side of the street to the north side, Heims said.The man was struck by the vehicle and taken to a hospital, where he was pronounced dead, he said.Alcohol was not considered a factor in the crash and the person at fault was yet to be determined, Heims said.Anyone with information on this deadly crash was asked to call Traffic Division investigators at 858-495-7800 or Crime Stoppers at 888-580-8477. 960

SAN YSIDRO, Calif. (KGTV) -- Two men were arrested in Mexico Wednesday after authorities say someone shot at a Border Patrol agent. The incident happened around 1:30 p.m. Wednesday roughly a mile and a half away from the San Ysidro Port of Entry. A spokesperson with Border Patrol says the agent radioed in and said someone shot at him. RELATED: Border Patrol agent injured after rock thrown at patrol carAuthorities in Mexico responded and were able to locate two men and a firearm. Both men were arrested. According to the agency, no one was injured and the patrol car was not hit by the gunfire. 607

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