Great Image / Concept / Execution!
I really love the picture.
Only crits I can offer are to maybe darken and blur the background a bit more to make the elements in the foreground (sea-horse and scuba diver) stand out a bit more.
Also, the third and forth leaf-like stuctures coming from the back of the seahorse’s body are blurred but at the same distance of the other ones - just a simple mistake.