The phrase "turquoise waters" refers to the color of the water, which is a beautiful shade of blue-green similar to the gemstone turquoise. Full definition
We walked through the forest trails where we saw black bears in their sanctuary and had the opportunity to swim in the cool turquoise waters of the mineral rich pools. (vjv.com)
Relax and unwind in the serene environment surrounded by nature's finest white sandy beaches and crystal clear turquoise water. (thewhitsundays.net)
You won't miss that old stuff when you are climbing a volcano or waist - deep in turquoise water. (globalgirltravels.com)