Well I spent the better part of 2 days trying to find out where the turtles were in the Will Waitrose quest and found only that others were struggling like me to find the turtles.

So finally I found them they are on the far east bank on the other side of Lake Nen Harn 16.6s / 40.8w to 22.6s / 40.8w .. just be careful of the elite troll in the far south called
Tharburz as he lobs rocks etc at u and the snappers themselves charge and can either knock u backwards or even stun u .. The flies and toads need killing to get the snappers to respawn.
Best of luck guys :)

Nieriell