The US state of Florida has somewhere in the neighborhood of 1,000 springs, the most dense concentration of springs in the world. Water discharging from many of Florida's springs flows through underwater caves like this one before bubbling to the surface. Climate change, increased pumping from the aquifer to meet growing water demand and pollution increasingly threaten the future of Florida's springs. Cave diver and hydrogeologist Dr. Patricia Spellman, shown here finning through one of her favorite underwater caves, uses observations she makes while swimming around in Florida's aquifer to inform computer models of groundwater flow to springs. her research is helping to ensure that water continues flowing from Florida's springs for future generations.
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