wow, nice image, I like the color combination that you ended up with here: purple is an unexpected color. And i like that you don't have the whole turtle here, instead you have a piece of where the turtle going - gives the image a sense of motion. As for Maho, is this the Maho of Sint Maarten in Caribbean?
I just love turtles and this sea turtle is wonderful and really like the way the light is reflecting on his shell. Your capture is marvelous and love those stunning colours. Just gave this a high score