SAN DIEGO (Border Report) -- U.S. Customs and Border Protection agents interdicted three maritime human smuggling attempts within a 24-hour period this week, the agency said.  One event took place about 9:30 a.m. on Sunday. Agents from CBP’s San Diego Air and Marine unit reportedly spotted a 23-foot fishing vessel as it dropped off four individuals at Dana Landing in Mission Bay, about 5 miles north of downtown San Diego. According to CBP, agents immediately approached the four subjects onboard and determined they were illegally present in the U.S. The four were placed under arrest, along with captain of the vessel and a crew member.   Pleasure craft used to smuggle four individuals into Dana Landing near San Diego. (Courtesy: CBP) CBP says another man was detained in a car nearby as he waited for the smuggled migrants. All individuals were transported to a local Border Patrol station for further processing. Later that morning, agents working in Orange County were notified of an active maritime smuggling event near Crystal Cove in Newport Beach.  When they arrived on scene, they were informed that 16 individuals had jumped out of a boat and ran toward a nearby roadway. Surveillance blimps on Southwest border could be upgraded, lawmaker says After searching the area and with the help of an Air and Marine Operations A-Star helicopter, CBP says San Clemente-based agents encountered 16 people, who were found to be illegally in the U.S.  All were transported to a local Border Patrol Station for further processing.  “Smugglers consistently put migrants at risk, with disregard for their safety,” said Brandon J. Tucker, director of Air and Marine Operations, San Diego Air and Marine Branch. “The ocean is one of the most dangerous routes to attempt illegal entry into the United States. Our agents are dedicated professionals who use advanced technology and teamwork to safeguard our coastal and maritime regions.” A third incident occurred early Monday morning when agents noticed a suspicious panga boat 3 miles off the coast of Solana Beach, California.  The agents then witnessed the same vessel drop off a group of individuals near Beacons Beach in Leucadia, according to CBP.  Report: Migrant drownings in Pacific Ocean up 3,200% since border wall got taller Agents were able to stop 15 migrants who were reportedly in the U.S. unlawfully. The group was taken for processing at a nearby Border Patrol station. CBP says the captain of the panga was able to maneuver his boat back into the ocean and eventually fled south into Mexican waters without being stopped.  Visit the BorderReport.com homepage for the latest exclusive stories and breaking news about issues along the U.S.-Mexico border “With the winter months approaching, these extremely dangerous smuggling routes may lead to injury or even fatal situations,” said San Diego Chief Patrol Agent Patricia McGurk-Daniel. “Our message has been consistent, do not to place your life in the hands of smugglers who promise you safe passage, but only have money and their own interests in mind.”