The focus is excellent. I would suggest croping the fingers out of the image; this would put the viewer's entire focus on the turtle. Other than that that one thing, the image has great clarity and sharpness. Nicely done.
Wonderful of you to let it free! This is an awesome shot. The detail and color is great. I kinda like the fingers there, symbolism of it being let go. But that's just me ;-)
“Now I know the things I know, and I do the things I do; and if you do not like me so, to hell, my love, with you!”
~Dorothy Parker (American short-story Writer and Poet, 1893-1967)