One of my turtles has a dark spot on one side of it's shell. It apparent because the spot is dark green and the rest of the shell is light green. Anyways, when the turtles goes swimming, the side that has the dark spot sinks deeper in to the water than the other side. It is like the turtle is tilted when swimming. But i don't know, becasue the turtle can still move the limbs on that side...
The turtle is not even 1-inch long...
Any suggestions as to what it is? how i may fix it?



