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Stephen P. Leatherman , aka Dr. Beach, announced his picks for the best US beaches for 2019. He has been releasing an annual list of the United States' top beach destinations since 1991. Leatherman is director of the Laboratory for Coastal Research at Florida International University. He uses 50 criteria -- from sand softness and water temperature to rip currents, pests and litter. So, without further adieu , here are his top 10 picks for this year. Don't forget the sunscreen!