I traveled to Hawaii with my sister a few years ago and we visited a beach north of Kona, where we found this turtle resting at the water's edge.  Sea Turtles are a threatened species but have been making a comeback in Hawaii because of improved conservation efforts and increased awareness of the importance of these animals to Hawaiian cultural history.  The Hawaiian name of the turtle is Honu.  

Around sunset in protected coves it's fascinating to sit and watch as the turtles feed in the water, their heads bobbing above the surface for a breath.  Low tides are best for viewing as the reef areas tend to have quieter water, making the turtles easier to spot.