The flatback turtle lives and nests only in Australian waters, giving it the smallest range of any sea turtle. Its shell, with raised edges and a softer texture than other sea turtles', is what gives the species its name.
What defines this group — Sea turtles
Reptiles that went back to the sea: they breathe air and return to lay eggs on the beach where they hatched.
Lungs, not gills: they have to surface to breathe.
The front limbs have become paddles, and the shell can no longer tuck them away.
Females find their way back to their birth beach, sometimes across thousands of kilometres.